[#52557735]  Uploading .afm file notifies Alpine of WorkFlow creation via Alpine::API

 - Renamed 'alpine.afm' fixture to 'alpine_flow', because .afm extensions don't exist for long in Chorus
 [#52557735]  Uploading .afm file notifies Alpine of WorkFlow creation via Alpine::API

 - Chorus posts xml content to Alpine and handles any errors that might occur
 - Beware of importing .afm in development - it requires more than one thread.
 [#52557735]  Stubbed out alpine api calls in specs.