move_gear: drop outdated rollback code

Don't call the remove-httpd-proxy hook when rolling back a failed
move_gear operation in MCollectiveApplicationContainerProxy.

The remove-httpd-proxy hook was removed from the v2 cartridge model, so
calling the hook results in calling an undefined method in the cartridge
model when v2 cartridges are used.  Furthermore, the platform now takes
care of configuring the port proxy, so it is no longer necessary for
move_gear to invoke remove-httpd-proxy.  Commit
7d458f76116a0b72b651155d1178ad3d70398104 already dropped the call in
move_gear to the "move" hook, which invoked the deploy-httpd-proxy hook,
which is also handled by the platform now.

This commit fixes Bug 987218.
Bug 988948 - Enable TC checks.
Fix for maxconn set to 2 for local gear.
Origin was not getting the /openshift cgroup created early, always try when enumerating parameters.
haproxy should use gear's uuid, and not app's uuid
Use client_message instead of client_result.
add intro and xref for VM types.  Add account info
Merge pull request #3208 from markllama/docs/vm

add intro and xref for VM types.  Add account info
Merge pull request #3140 from Miciah/move_gear-fix-rollback-drop-remove-httpd-proxy

Merged by openshift-bot
Merge pull request #3202 from rmillner/misc_bugs

Merged by openshift-bot
Merge pull request #3203 from mrunalp/bugs/haproxy_maxconn

Merged by openshift-bot
Merge pull request #3204 from rmillner/cgroup_fixes

Merged by openshift-bot
Merge pull request #3205 from rajatchopra/ha

Merged by openshift-bot
Merge pull request #3207 from mrunalp/bugs/982615

Merged by openshift-bot