Fixes #35088 - Remove GCE Compute resource code

All code related to GCE compute resource
is now in Foreman Google plugin

https://github.com/theforeman/foreman_google

Fixes #30793 - Remove API v3 from fog-ovirt

Fixes #29284 - Drop Rackspace support

Fixes #24532 - Allow changing display type and keyboard in oVirt

Fixes #26840 - Remove experimental label from ovirt v4

Fixes #23067 - expose option to use oVirt APIv4

Also handle v4 certificate error and v3 path migration

fixes #22062 - support vmware vmrc console

fixes #16592 - keep consistent for headline capitalization

Based on PatternFly Outline Headline Style, Suggested to
keep consistent in headline capitaliztion.

fixes #13618 - cache expensive vmware api calls

Fixes #15066 - operating systems and ovirt < 3.6

The operating systems endpoint was added in ovirt 3.6
https://bugzilla.redhat.com/show_bug.cgi?id=1050243. Older versions
were failing getting 404 when provisioning.

This patch adds a check for this case. We also cache the operating...