Split up each option value properly.

"evm:db:region --" was previously intended as a single unescaped option key with no value.

AwesomeSpawn was changed to escape keys in addition to values that it had done previously.
This caused the command line to be built like this:
script/rails runner script/rake evm:db:region\ -- --region 0

"dvm:db:region" and "--" are now separate option values with no key.
Change to AwesomeSpawn instead of using LinuxAdmin.
Split up a long line for readability.
Merge pull request #199 from jrafanie/fix_db_regioning_escapement_with_new_awesome_spawn

Fix db regioning escapement with new awesome spawn
Simplify OpsController::Diagnostics#log_depot_build_edit_screen

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Fix typo

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Remove unnecessary verify and validate methods for log_depot_settings

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Remove credential validation from creation

FileDepotNfs.create!(:uri => "nfs://test") fails because of missing credentials
https://bugzilla.redhat.com/show_bug.cgi?id=965889
Add #verify_credentials methods to appropriate FileDepot subclasses

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Change FileDepot ::SUPPORTED_DEPOTS to #supported_depots

Build a hash of subclass => display_name for all descendants
https://bugzilla.redhat.com/show_bug.cgi?id=965889
Update drop-down to to get the correct uri_prefix based on the model

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Add support_case and depot_name to the edit screen where appropriate

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Add reverse relationship for MiqServer#log_file_depot

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Create log_file_depot using relationships

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Simplify all the things

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Ensure that all FileDepots are subclassed

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Simply state that we are checking whether credentials are required

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Fix validations for MiqSchedule backup depots

https://bugzilla.redhat.com/show_bug.cgi?id=965889
Preload subclasses of FileDepot so that they appear in supported_depots

Rename FileDepotFtpAnonymous to follow our standard subclass naming
https://bugzilla.redhat.com/show_bug.cgi?id=965889
Leverage the dictionary to provide display names for the FileDepots

https://bugzilla.redhat.com/show_bug.cgi?id=965889