The template guide documentation references OS::Compute::Server in several
places, and there are similar errors in the environment code comments and
environment test code. Also there is a similar issue with template guide
reference to Rackspace::Compute::Server, and a minor typo/spelling issue.
Change-Id: Iafbf405a328bdd8222c277efe5b52d7f8f589635
Closes-Bug: #1270078