Remove vCenter credentials

Signed-off-by: Jesse Zhang <jz@pivotallabs.com>
Revert "Revert "require ruby_vim_sdk in vSphere client""

Fixed the build.
This reverts commit 98f98f015d6dc97c97f03443cb00c1e49c7ab1a6.

Signed-off-by: Jesse Zhang <jz@pivotallabs.com>
Back-fill tests for #find_by_inventory_path
Replace explicit subjects with named ones

Signed-off-by: Rob Day-Reynolds <rdayreynolds@pivotallabs.com>
Remove dead code in tests

Signed-off-by: Rob Day-Reynolds <rdayreynolds@pivotallabs.com>
Backfill tests for VSphereCloud::replicate_stemcell

Signed-off-by: Tony Hansmann <thansmann@pivotallabs.com>