Renames chron_stage storage provider to snapshot storage provider. No functional changes.
Moves the snapshot user variable (used to give a DuraCloud user the permissions necessary to interact with a snapshot space) out to be supplied via app-config init
Adds stub classes for all snapshot and restore tasks. Updates the previously named "snapshot" action to the "create-snapshot" action.
Updates the create snapshot call to be consistent with the changes to the bridge app.
Makes tests consistent
Update the create snapshot parameters to directly pass description and user email values to the task and then down to the bridge app
Merge branch 'feature/snapshot-provider-tasks' into develop