Log more detail about nova API operations

Change-Id: I7cd38df2519637d7b8e09fe1650b7ba775461889
give workers a little longer to stop before bailing on them

Change-Id: I9dcc8110ddc024037bf3e62b20e76a87e005315b
Merge pull request #171 from dhellmann/bug/2195

Add debugging for DHC-2195