Add support for oslo.vmware

Change-Id: I2162a339b1869c27850afcda6be3c4e11de94e0e
Fix heat role create error

https://review.openstack.org/#/c/76036/ changed the user creat commands,
missed the argument to --user

Change-Id: Iaf10ef80a2fb0227dd66a314e7ec253dfb4dc4fe
Unbuffer log output

* Force-flush log output so we don't lose log output in certain error cases.
* Slow down exit paths: add sleep to die(), wait until last moment to
  kill child processes (including the awk log output filter)

Change-Id: I1620fd33b89b237d9c2bb6206f3de2c81719f676
Merge "Add support for oslo.vmware"
Merge "Fix heat role create error"
Merge "Unbuffer log output"
Merge branch 'master' of github.com:openstack-dev/devstack