Move Update action from API controller

[Jeremy1026]

Relevant Ticket or Conversation:

LG-10946

Description of Changes:

The Api/ServiceProviderController#update method was called by a user button press on the front end. This feels like not the best place for this method, this PR moves it to the ServiceProviderController and renames it to publish as the action is completes is re-publishing the SPs in the int environment.

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