Cleaned up a flakey test for director locks

- Test was expecting lock renewal to have happened, which may not happen
  during a 0.1s test.

[#76021152]

Signed-off-by: Phan Le <ple@pivotallabs.com>
Merge final release for build 2669 to develop
Fix notifying_plugins_spec

Since bf0b96c (Simplify bosh-monitor stop), this test would cause unit tests
to fail because EM would have still been running in another thread.

Signed-off-by: Tom Xing <xingzhou@cn.ibm.com>
Make sure vpshere shuts down VM

* Wait for 60 seconds for VM to shutdown
* Send power-off command if it still up

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
Set ntp server in vsphere manifest properties section

Director config file is using ntp server configuration from
manifest properties section.

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
Decrease the number of parallel tests on traivs to 4

This is to prevent Travis from killing integration tests

Signed-off-by: Maria Shaldibina <mariash@pivotallabs.com>
Adding final release for build 2671