CBLT-254: rename "upload_cblite_android_artifacts" to "release_android_artifacts"

Change-Id: I24237bd5a7040991494f9b86921a2e8751e3d85c
Reviewed-on: http://review.couchbase.org/35528
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>