Currently, using the upload command in Pegleg will upload all discovered
collections to Shipyard by repo. Uploading multiple of these repos can
result in 409 errors during uplift scenarios. This change compiles all
documents into a single collection document that can then be uploaded to
Shipyard.
Requires a collection name to be specified that will be used as the
'collection_id' for uploading to Shipyard.
Buffer mode is set by default to 'replace' instead of 'auto'.
Change-Id: I546b03fd82873296fff10aba355a50e4b11352d0
d6ee04f9a3