CBQE-1090: add scripts/measure_sched_delays.py

Syntax: measure_sched_delays.py [options]

Options
 -i <file>        Path to .ini file containing cluster information.
 -p <key=val,...> Comma-separated key=value info.

Available keys:
 path=<file_path> The destination path to folder for deploying and running measure-sched-delays.tar.gz script
 task=<start/stop/fetch_logs> sart/stop measure-sched-delays script or fetch its logs ('start' by default)

Example:
 measure_sched_delays.py -i cluster.ini -p path=/tmp/measure-sched-delays,task=start

Change-Id: I1921feb2cd77516f098f2373d72c813a3a63ffbc
Reviewed-on: http://review.couchbase.org/25121
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Deepkaran Salooja <deepkaran.salooja@globallogic.com>
CBQE-1090: implement measure-sched-delay script with testrunner

required parameter in testrunner to use script: get-delays=True ( False by default)

features:
copies measure-sched-delay archive on remote vms if it doesn't exist there
decompresses it, configures and makes a tool
launches script and record logs in sched-delay-{IP}.cpu{NUM} format on all servers
at the end of testrunner execution copies all logs delays on local host(can be attached as artifacts from jenkins jobs)

Change-Id: I059a3307a9f7fbe486f7ffa1079e566bfbe6ec66
Reviewed-on: http://review.couchbase.org/25110
Reviewed-by: Deepkaran Salooja <deepkaran.salooja@globallogic.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>
CBQE-1107: improvements in GetrTests

only one parameterized test method

Change-Id: I6d4bd4ada404cf6cdda87657841e820808437402
Reviewed-on: http://review.couchbase.org/25211
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
CBQE-1136: fix Errno 104 ConResByPeer for rebout tests

Change-Id: I56731d79272c6b79fcea6979736c6c64d5dbe6b3
Reviewed-on: http://review.couchbase.org/25222
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>
MB-100: tune test configs

Change-Id: I42339daf9bf99229095110d23558f808c2d4bdd7
Reviewed-on: http://review.couchbase.org/25224
Reviewed-by: Pavel Paulau <pavel.paulau@gmail.com>
Tested-by: Pavel Paulau <pavel.paulau@gmail.com>