Fixed a coverity issue.
ac-7206 don't map the power states, return an error if an unsupported power state is requested.
ac-7208 make the pbsnodes -m command synchronous so I can get the error back to the user.
trq-2613 return the error code from setting the power state for nodes.
Fixed a unit test.
Merge pull request #225 from adaptivecomputing/master

Merge Master into Green
Fixed a Jenkins build error.
Merge pull request #229 from adaptivecomputing/master

Merge ascent into Green
Merge pull request #230 from adaptivecomputing/master

Fix two unit tests.
fixed a merge issue.
Merge branch 'master' into feature/green
Merge pull request #232 from adaptivecomputing/feature/green

Feature/green