Add check for RABBIT_HOST and RABBIT_PASSWORD in iniset_rpc_backend

In multi-node environment, RABBIT_HOST and RABBIT_PASSWORD are used to
indicate the server running rabbitmq service. We should check the
variables in iniset_rpc_backend.

Change-Id: Iaea8cc87315be91429a8747254310d6474930eec
have the run and logs files in $SWIFT_DATA_DIR

- Set all the run lock and logs files to go to $SWIFT_DATA_DIR.

Change-Id: I42b72572e9700457475398043057d37d0dbc65ac
Quantum root_helper update

We are currently moving root_helper to the [AGENT] section. This patch
is intended to enable the transition for that process.

Change-Id: Iff8144f74a1a5f8b0fc9af44bccf0213f4bfad7e
Merge "Quantum root_helper update"
Merge "Add check for RABBIT_HOST and RABBIT_PASSWORD in iniset_rpc_backend"
Merge "have the run and logs files in $SWIFT_DATA_DIR"