VMware: add missing translations

Commit 1c6898efecd7d78855efcb22d9c38d6127339000 added a number
of exceptions that did not have translation support.

Change-Id: I38715b8b14bdf9ccee08db44cf171f9c860b4fa8
ec2: remove db.instance_system_metadata usage

Update some direct db API calls getting and updating instance system
metadata with usage of the Instance object.  This is the last of
db.instance_* usage in the ec2 API.

Change-Id: I9270ddd2c6a91e85f1c0ed684cb0e440a1587cf2
ec2: get services using ServiceList object

Remove another direct use of the db API by making use of the
ServiceList object.

Change-Id: I9594033d798892df95404209d702f6af543a7139
Merge "ec2: remove db.instance_system_metadata usage"
Merge "ec2: get services using ServiceList object"
Merge "VMware: add missing translations"