Load licenses only if running on GCE
Test that gcimagebundle doesn't fail when run locally
Pass the result of the function call as an argument in place of a callable
Restored original order of parameters
Merge pull request #73 from kratorius/fix-license-check

Fix license check when gcimagebundle is run outside of GCE
Merge pull request #70 from jeremyje/master

Update get_metadata_value to use v1 metadata server url.