Incorrect tagging in GCE instance template

[hartfordfive]

Cloudier Director Version: 2.4.0
OS: CentOS 6

There are currently two issues with adding tags to GCE instances:

1. The tagging system seems to have been built to act like it does on AWS in the format of tagName=tagValue, although with GCE there is no actual tag value, only a tag name
2. The tags are added to the instance metadata and not the actual tags section. The end result is that if you've created custom firewall rules that apply to given tags, they will never be applied because of the incorrect placement of the tags.