Configure the stores explicitly

The store configure() method is being called two times: on one hand
in the store constructor and also explicitly in the create_stores()
method.

Since the configure() method can contain remote calls, it is better
to avoid calling it more than once, especially, when it doesn't add
any value.

Change-Id: I6f39dfa7fd3d0ef7ff4fc2a9ebbebdfb0cf114a1
Merge "Configure the stores explicitly"