Adds JcloudsLocation.SKIP_JCLOUDS_SSHING

- Config option to do all ssh’ing in brooklyn code, rather than
  configuring the jclouds TemplateOptions to setup the user.
- i.e. have jclouds return the VM, before we then execute the ssh
  commands for user setup/creation.
Fix EntityExecutionManagerTest

- Failed in jenkins with “wrong” tasks being GC’ed.
- Aled speculates the two tasks terminated in the same millisecond,
  so introduce small delay between tasks and also log more info about
  tasks on error.
DynamicCluster: ensure cause of resize error is reported
Add TestApplication.newSimulatedLocation()
Bump TomcatServer version to 5.0.56
TestJavaWebAppEntity: tidies
TomcatAutoScalerPolicyTest: code tidy
Use Duration for AutoScalerPolicy.builder methods

- instead of taking long, take Duration parameter.
- for minPeriodBetweenExecs, resizeUpStabilizationDelay,
  resizeDownStabilizationDelay, and maxReachedNotificationDelay.
- Test tidy (for use of deprecated methods)
Fix Solr version number

- and uploaded solr-4.7.2.tgz to
  developers.cloudsoftcorp.com/brooklyn/repository/SolrServer/4.7.2/solr-4.7.2.tgz
Asserts: log.info with details of failure
BrooklynMavenArtifactsTest: allow retry for URL

- have seen response code 500 from repository.apache.org for snapshot
  builds, so retry for default timeout (30 seconds)
This closes #275
Bump MongoDB version to 2.6.5
Avoid NPE in MongoDBShardClusterImpl
MongoDBShardedDeployment: support spec for each type

- Config keys for setting member spec of each type of cluster: for
  the routers, the Replica Set and the config servers.
  Important for if want to give different config files to each.
- Supply test-config for integration test, so doesn’t create massive
  files.
Default mongo.conf: quiet=false for production
Fix MongoDBConfigServerIntegrationTest

- use test-mongodb-configserver.conf, rather than that for the
  members of the replica set.
test-mongodb: decrease disk usage with noprealloc
MongoDBServer: white space tidy
Bump cassandra v2 test version to 2.0.11

- and uploaded 2.0.11 artifact to developer.cloudsoftcorp.com