chore: Remove unused module (superseded by bootstrap)

Change-Id: I0f5617c85a69534a6d9c3c3b8307bd5790937df2
Use metadata instead of **metadata for claim's updates

In order to keep consistency with other methods (queue's upsert), this
patch replaces **metadata with metadata and implements some logic in
claim's create method.

Implements blueprint storage-base

Change-Id: Ibec9e8d07a2db4c1339f6fb7ba24de8820e0235d
Merge "chore: Remove unused module (superseded by bootstrap)"
Suppress some Coverage report output

We are not responsible for marconi.openstack.common code so it
will be excluded from our Coverage report. Also excluding
NotImplementedErrors as there's obviously no implementation in
that case to be tested.

Change-Id: Ie1e2cf4b858afef56ffed7ee225a0f8c29dcaef8
split message's get method in 2 separate methods

Before, MessageController's get method did both, find and get
operations. In order to keep consistency with the QueueController
implementation and make the code a bit cleaner, this patch splits that
method into list and get.

Implements blueprint storage-base

Change-Id: I7661ea40ae1bf9806f61a5ded74a550259410a84
Merge "Use metadata instead of **metadata for claim's updates"