Fix glance_store project repo

There was a typo in repository name - `glance.store` instead of
`glance_store`. To ensure, see repository location at github [1].

[1] https://github.com/openstack/glance_store

Change-Id: Ieacaa64475a2c24746f217dcfa4b1596dcfe585a
Merge "Fix glance_store project repo"