Move glance auth cache creation to configure_glance

We install the glance api on all nodes in multinode testing. This has
been failing because we don't configure the glance auth cache dirs if
we only install the glance api service. This was done as part of
init_glance which is only run when installing g-reg.

Fix this by moving the auth cache dir creation step into
configure_glance which is run for the glance api.

Change-Id: Ie669827507df0f524e6e53fe4ab3dff848dd4bd7
1 file changed