trovestack doesn't understand the new systemd based system
trovestack doesn't understand the new systemd based system

trovestack is tied to a screen based deployment. This change addresses
this shortcoming by invoking cmd_start and cmd_stop even if screen
isn't found.

Depends-On: I2f2a12207581a94fb8561a6d65a3a79b4a29b063

Change-Id: Id3d95ea97ad4ef9d3acd1e28c980af80d0903203
Closes-Bug: #1688626

openstack/trove,zhangg/trove,zhangg/trove,openstack/trove