Enable configuration of Identity API v3

* Default IDENTITY_API_VERSION to '2.0' in stackrc

Note: the value of these *_API_VERSION variables will NOT include
the leading 'v' as the CLI tools do not allow it.

Change-Id: Ic6473833be35625282e7442f3c88fc1c4d0cc134
Set the correct URLs in the version return data

The URLs advertised in the data returned by keystone's '/' route default
to localhost and is not usable from off-host.  Not that anything in
DevStack uses it (yet).

Change-Id: I049789f568eff48c1abb0678c3ac0ae8a8960c64
Enable all notifications update from Nova for Ceilometer

This will allow Ceilometer to grab even more events about instances states
changes.

Change-Id: Ie28258607695caf96dcfa292cb74355aced85ccf
Merge "Enable configuration of Identity API v3"
Merge "Set the correct URLs in the version return data"
Merge "Enable all notifications update from Nova for Ceilometer"
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp