system test script runs CATS as bosh errand now

Also update README to explain both ways of running CATS
smelter -> circus, remove dial-health-check

Signed-off-by: Amit Gupta <agupta@pivotallabs.com>
Bump src/cf-acceptance-tests, src/etcd, src/executor, src/inigo, src/rep, src/route-emitter, src/stager, src/warden-linux

Bump cloudfoundry/cf-acceptance-tests:
  Michael Fraenkel:
     Ignore the results directory
Bump coreos/etcd:
  Brandon Philips:
     chore(server): bump to 0.4.2+git ( Travis Unknown )
     chore(server): bump back to 0.4.2 ( Travis Unknown )
     chore(server): bump to 0.4.2+git ( Travis Unknown )
     feat(CHANGELOG): bump to v0.4.2 ( Travis Unknown )
     Merge pull request #822 from philips/add-notes-about-discovery ( Travis Unknown )
     Merge pull request #816 from unihorn/95 ( Travis Unknown )
     Merge pull request #817 from cholcombe973/master ( Travis Unknown )
  Yicheng Qin:
     Merge pull request #825 from unihorn/98 ( Travis Unknown )
     fix(multi_node_kill_all_and_recovery_test): ensure cluster is up ( Travis Unknown )
     Merge pull request #824 from unihorn/97 ( Travis Unknown )
     fix(remove_node_test): remove unnecessary cluster configuration ( Travis Unknown )
     docs(cluster-discovery): add caution to use old discovery endpoint ( Travis Unknown )
     Merge pull request #819 from unihorn/97 ( Travis Unknown )
     Merge pull request #814 from unihorn/91 ( Travis Unknown )
     fix(simple_snapshot_test): enlarge reasonable index range ( Travis Unknown )
     fix(remove_node_test): ensure cluster config is activated ( Travis Unknown )
     fix(multi_node_kill_all_and_recovery_test): ensure cluster running ( Travis Unknown )
     fix(server): set joinIndex when recovered ( Travis Unknown )
     tests: add TestMultiNodeKillAllAndRecorveryAndRemoveLeader ( Travis Unknown )
     Merge pull request #818 from unihorn/96 ( Travis Unknown )
     tests(standby_test): comments ( Travis Unknown )
     fix(standby_server): able to join the cluster containing itself ( Travis Unknown )
     docs(clustering): limit for peer-address changing ( Travis Unknown )
     fix(server/v2): set correct content-type for etcdError response ( Travis Unknown )
  Chris Holcombe:
     Adding autodock into the libraries and tools section ( Travis Unknown )
  Rob Szumski:
     Merge pull request #808 from robszumski/update-optimal-size ( Travis Unknown )
     fix(docs): update doc with standby info ( Travis Unknown )
Bump cloudfoundry-incubator/executor:
  Alex Suraci:
     bump deps ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/executor/builds/26428907 )
     fix logging in monitor step ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/executor/builds/26412751 )
Bump cloudfoundry-incubator/inigo:
  Onsi Fakhouri:
     bump dependencies
     add tests to scale down and stop apps
  Alex Suraci:
     introduce tps; use for getting instance status
     get rid of temporary LONGER_TIMEOUT now that zip extraction has been optimized
     switch from smelter to circus
Bump cloudfoundry-incubator/rep:
  Onsi Fakhouri:
     bump deps ( Travis finished: https://travis-ci.org/cloudfoundry-incubator/rep/builds/26425258 )
     resolve the LRP *then* stop the container ( Travis finished: https://travis-ci.org/cloudfoundry-incubator/rep/builds/26425218 )
Bump cloudfoundry-incubator/route-emitter:
  Onsi Fakhouri:
     add custom matchers to ensure order agnosticism (fixes tests on golang1.3) ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26678936 )
     watch uses the routing table ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26622998 )
     add routing table - an inmemory cache of the routing table ( Travis Unknown )
Bump cloudfoundry-incubator/stager:
  Ted Young:
     Add KillWithFire to runner ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/stager/builds/26423363 )
Bump cloudfoundry-incubator/warden-linux:
  Alex Suraci:
     add build.yml
Add tps submodule
Bump src/inigo, src/route-emitter

Bump cloudfoundry-incubator/inigo:
  Onsi Fakhouri:
     bump dependencies
Bump cloudfoundry-incubator/route-emitter:
  Onsi Fakhouri:
     bump deps ( Travis created: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26710426 )
     route-emitter continually attempts to greet the router until the router responds ( Travis created: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26710188 )
     fix race condition ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26703489 )
     resync with etcd on an interval ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26703013 )
     syncer is tested using fakes ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26699504 )
Specify trusty stemcell in aws infrastructure template.
"Bump for drone"
Bump src/cf-acceptance-tests

Bump cloudfoundry/cf-acceptance-tests:
  Matthew Sykes:
     fix cats - restart persistent app if it is stopped
bump fd limit of etcd

Signed-off-by: Momchil Atanasov <m.momchil@gmail.com>
Bump src/cf-acceptance-tests, src/rep, src/route-emitter, src/stager

Bump cloudfoundry/cf-acceptance-tests:
  David Sabeti and Derek Richard:
     Sso lifecycle spec only requests permissions scope
  Matthew Sykes:
     fix cats - restart persistent app if it is stopped
Bump cloudfoundry-incubator/rep:
  Alex Suraci:
     deps ( Travis finished: https://travis-ci.org/cloudfoundry-incubator/rep/builds/26790144 )
     Don't DOS etcd when watching fails ( Travis finished: https://travis-ci.org/cloudfoundry-incubator/rep/builds/26789933 )
Bump cloudfoundry-incubator/route-emitter:
  Alex Suraci:
     deps ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26790114 )
     wait for 3 seconds before re-watching on error ( Travis Failed: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26790081 )
  Onsi Fakhouri:
     when handling deltas, only emit registration messages for new containers/routes ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26727073 )
Bump cloudfoundry-incubator/stager:
  Alex Suraci:
     deps ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/stager/builds/26790133 )
     Retrying to watch should not DOS etcd ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/stager/builds/26790030 )
Bump src/route-emitter

Bump cloudfoundry-incubator/route-emitter:
  Alex Suraci:
     don't prevent stopping while reconnecting to etcd ( Travis created: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26799376 )
Merge branch 'develop' of https://github.com/cloudfoundry-incubator/diego-release into develop
Bump src/app-manager, src/rep, src/route-emitter

Bump cloudfoundry-incubator/app-manager:
  Amit Gupta:
     bump deps ( Travis created: https://travis-ci.org/cloudfoundry-incubator/app-manager/builds/26803759 )
     test handler channel lifecycle ( Travis finished: https://travis-ci.org/cloudfoundry-incubator/app-manager/builds/26801800 )
     split apart app-manager into handler and nsync ( Travis Unknown )
Bump cloudfoundry-incubator/rep:
  Amit Gupta:
     catch error edge case in lrp_stopper ( Travis started: https://travis-ci.org/cloudfoundry-incubator/rep/builds/26803712 )
Bump cloudfoundry-incubator/route-emitter:
  Alex Suraci:
     refactor a bit ( Travis created: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26804140 )
     fix steno logger source ( Travis Success: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26799966 )
Bump src/rep, src/route-emitter

Bump cloudfoundry-incubator/rep:
  Alex Suraci:
     bail out of retry loop when a signal is received ( Travis started: https://travis-ci.org/cloudfoundry-incubator/rep/builds/26805046 )
Bump cloudfoundry-incubator/route-emitter:
  Amit Gupta:
     add more logging ( Travis started: https://travis-ci.org/cloudfoundry-incubator/route-emitter/builds/26805107 )