Fix script/update_doc.rb

It was reseting the changes generated by yard doc
Merge pull request #2565 from pitr-ch/quick/update-doc-fix

Fix script/update_doc.rb
978001 - add 'display_name' to rhsm environment listing

When a system registers to katello using subscription manager,
the environment 'label' is used.  This is also what is shown
if a user lists the environments.

There are, however, cases where rhsm tools desire access
to the environment name.  Since we need to support the
existing interface where name=env.label, this commit will
add display_name=env.name to the rhsm api for environments.
977912 - system group event ui - fix for handling error responses

This commit contains changes handle when the 'result' for an
action is an array vs a string.
Merge pull request #2551 from bbuckingham/978001

978001 - add 'display_name' to rhsm environment listing
Merge pull request #2556 from bbuckingham/977912

977912 - system group event ui - fix for handling error responses