Target template related actions

[pkliczewski]

As part of our performance improvements we want to reduce the scope of a
refresh when adding and removing templates.

Depends on ManageIQ/manageiq-providers-ovirt#70

Bug-Url:
https://bugzilla.redhat.com/1451577

[pkliczewski]

This patch depends on ManageIQ/manageiq-providers-ovirt#70 and it needs to be merged first.

[miq-bot]

Checked commit pkliczewski@7e4ee46 with ruby 2.2.6, rubocop 0.47.1, and haml-lint 0.20.0
0 files checked, 0 offenses detected
Everything looks fine. 👍

[pkliczewski]

Bug 1451577 - [RFE] Targeted refresh or Templates events

[oourfali]

@gmcculloug can you please review this one?
Thanks!

[gmcculloug]

Removed WIP label now that dependent PR is merged.

[gmcculloug]

@pkliczewski Were you able to test these changes on a live system? Is the src_vm always available in the db at the time the event is processed? Before that was not always the case for "New VM" events, but I know RHV creates the basic VM instance based on an event.

cc @lfu

[pkliczewski]

@gmcculloug When the object is not there we use event_action_refresh_new_target to make sure we create it before the refresh. Yes, I have tested it on my env.

[lfu]

LGTM 👍