Fix to state/apiserver/uniter_test as requested by davecheney

No longer cares what order Actions arrive in.
Fix to state/apiserver/uniter_test as requested by davecheney

Addressed comments / request for helper function.
Trivial syntax tweak as per PR 448 comments
Merge pull request #448 from binary132/uniter-test-fix

Fix to state/apiserver/uniter_test as requested by davecheney

No longer cares what order Actions arrive in.