Remove some keystone resource parsers

Current "keystone" command can parse the specified resources(tenant,
user, role, service) by itself. Then it is unnecessary to translate
resource names to resource ids in devstack.

This patch removes these resource parsers from devstack for cleanup.

Change-Id: Ibae06581b471f02168b559b4ca0c10f14996d661
Add sanity check framework to verify neutron server/backend integration

Some Neutron plugins require controllers and multiple backend services
to operate correctly. This patch adds the framework for third party
plugins to run sanity checks after Neutron Server has started.

This simple addition may reveal potential configuration pitfalls
much earlier in the dev/test cycle, thus speeding up the build
churn process.

The first plugin that uses this framework is the VMware NSX one.

Closes-bug: #1265671

Change-Id: I17f9c5c8e828316ff03f0eff42ae4ae6c6c58733
Merge "Add sanity check framework to verify neutron server/backend integration"
Merge "Remove some keystone resource parsers"