fix OOIION-1292 bad reporting of resource commands corresponding to platform agent states

https://jira.oceanobservatories.org/tasks/browse/OOIION-1292

fixed broken related integration test and then fixed the corresponding reporting in the platform agent.

bin/nosetests -sv ion/agents/platform/test/test_platform_agent_with_rsn.py:TestPlatformAgent.test_capabilities

Also verified in the UI:

![1292-after-go_active](https://f.cloud.github.com/assets/556505/1161773/539f515a-1ff8-11e3-9226-e8030f811abb.png)