Sketch of FLOC-1022.
Sketch of FLOC-1023.
initial ZFS resize volume tests
fake in-memory filesystem resize function
deployer test sketches
remove pdb line
detect when a locally existing volume needs to be resized
test sequential changes for volume resize
lint cleanup
test volume service resize
Merge remote-tracking branch 'origin/master' into restart-policy-2-FLOC-727

Conflicts:
	flocker/node/test/test_deploy.py
Add restart_policy to the list of allowed keys
Search and replace retry_policy > restart_policy
Test for correct attribute in test
More incorrect attribute references in restart_policy tests.
Fix an exception test to assertRaises.
Fix the description of the non-dict restart_policy test.
Only supply an Application.restart_policy if one was defined in the config.
Start parsing some policies
The config key is maximum_retry_count