Include SAVANNA_CONF_DIR into SAVANNA_CONF_FILE

It's the commom way of using X_CONF_FILE variable.

Change-Id: Ibc284be44ffdd25be3191913c78424cbf06b2bb0
Stop all neutron-ns-metadata-proxy with stop_neutron

Process name is actually python therefore neutron-ns-metadata-proxy
pattern didn't match wanted process.

Closes-bug: #1269982
Change-Id: Ib4439b0d32f103253b461841fa903c65763ff280
Generate Tempest service list rather than hard-code it

The list of services that Tempest used to set its 'service_available'
config values was hard-coded. To be plugin-friendly have each
service (project) add its name to the TEMPEST_SERVICES variable
and use that for setting the 'service_avilable' values.

Change-Id: I208efd7fd0798b18ac2e6353ee70b773e84a2683
Merge "Include SAVANNA_CONF_DIR into SAVANNA_CONF_FILE"
Merge "Stop all neutron-ns-metadata-proxy with stop_neutron"
Merge "Generate Tempest service list rather than hard-code it"
Merge branch 'master' of github.com:openstack-dev/devstack