Update Barbican resources to match library changes

This patch updates both Barbican resources and the client to match
recent changes in python-barbicanclient.

Closes-Bug: #1396283

Change-Id: I7a785fd68ffdcda0e622d576a555b3699c706b77
Fix [H302] errors in heat/engine

Change-Id: Ib3e1a6f9d5e82e9fb29b000157b57dbc3883b42e
Fix [H302] errors in heat/tests

Change-Id: Ia7527c6704e61d854be8e847e2401f33fb48d4df
Fix [H302] errors in heat_integrationtests

Change-Id: I116e55685e1ee11a0c58c9b33c00cfc0e9f42efe
Remove ignoring [H302] in tox.ini

Change-Id: I5049d4108d3fa88fb7214034ddcd77f27bb8e84d
Merge "Fix [H302] errors in heat/engine"
Merge "Fix [H302] errors in heat/tests"
Merge "Fix [H302] errors in heat_integrationtests"
Merge "Remove ignoring [H302] in tox.ini"
Merge "Update Barbican resources to match library changes"