Add region checking for all user schedules

[ashybalka]

User story:
I have master-slave architecture, with DB replication from slave to mater.
When the schedule runs on slave, it is update in the master db and the runner starts this schedule in master without checking region.

[miq-bot]

Checked commit ashybalka@d857e53 with ruby 2.3.3, rubocop 0.52.1, haml-lint 0.20.0, and yamllint 1.10.0
1 file checked, 0 offenses detected
Everything looks fine. 👍

[Fryguy]

@jrafanie can you review as well? I don't remember if schedules fall into that weird replication case like users and roles. Pretty sure they don't, and if not, then this is good.

[jrafanie]

Yeah, this makes sense to me. Schedules are replicated and we don't want the global region schedule worker to run schedules for another region.