Use one name for neutron database after healing

Now that the Neutron database is healed we no longer need a
plugin-specific name for it.

Related Blueprint: db-migration-refactor

Change-Id: If25e77444f115817e5570bb447bde5b9c8d6e686
Fix exercises for Trove

Reasons:
 - trove.sh should use native python client to exercise Trove API

Changes:
 - adding datastore and datastore version exercises

Change-Id: I041465e5bda6ad9ec3f597ecc290612b8baef09c
Closes-Bug: #1346743
Move SERVICE_PROTOCOL from stack.sh to stackrc

This ensures that SERVICE_PROTOCOL is available to other consumers
of the devstack environment like grenade.

Change-Id: I702d7d239e50dd1446d55c076c7a7c57768486ff
Closes-Bug: 1335953
Remove configuration parameter EXTRA_BAREMETAL_OPTS

According to the comments in stack.sh the configuration parameter
EXTRA_BAREMETAL_OPTS should be removed during the Juno cycle.

Change-Id: I8564d16e56d1f77d3afa4af9a50fbffa3da8bfe5
Remove configuration parameter Q_SRV_EXTRA_DEFAULT_OPTS

According to the comments in stack.sh the configuration parameter
Q_SRV_EXTRA_DEFAULT_OPTS should be removed during the Juno cycle.

Change-Id: I2a00c924cd51dab00b56cdab1e48e32ffa007de4
Merge "Use one name for neutron database after healing"
Merge "Remove configuration parameter EXTRA_BAREMETAL_OPTS"
Merge "Remove configuration parameter Q_SRV_EXTRA_DEFAULT_OPTS"
Merge "Fix exercises for Trove"
Merge "Move SERVICE_PROTOCOL from stack.sh to stackrc"