Correct initial issues discovered with Service Reconfigure

(1) Crash when determining whether to hide the reconfigure button for services
    created through automation w/o an associated service template.
(2) Service dialog lists and radio buttons showed the keys instead of the
    human-readable values.
Set dialog checkbox field value to "t" or "f" when clicked

https://bugzilla.redhat.com/show_bug.cgi?id=1132014
Add the identity copr yum repo for post install updates.
Checkbox dialog field needs to be checked if field is marked as required

Refactored validate method to breakout required_value_error? method to allow sub-class override.
Created validate_error_message method for sub-class override as well.

https://bugzilla.redhat.com/show_bug.cgi?id=1132014
Merge pull request #442 from jrafanie/add_identity_copr_yum_repo

Add the identity copr yum repo for post install updates.
Merge pull request #445 from dclarizio/set_correct_checkbox_field_values

Set correct service dialog checkbox field values and validate properly if Required is set
Merge pull request #436 from dillaman/fix-service-reconfiguration

Correct initial issues discovered with Service Reconfigure