Merge pull request #983 from newbrough/preload_external_data

Preload external data
removed methods in service which were used for creating data processes and workflow definitions for google_dt. Preload is responsible for these
Merge branch 'master' of github.com:ooici/coi-services
Bumped ion-defs
Bumped pyon
Merge pull request #985 from shenrie/master

Bumped pyon and ion-defs
Bumped pyon
Merge pull request #986 from shenrie/master

Bumped pyon
Fixes for intermitantly failing governance tests
Merge pull request #987 from shenrie/master

Fixes for intermitantly failing governance tests
Updates cov model ref
Merge pull request #988 from lukecampbell/cov_bump

Updates cov model ref
Make sub type strings.
Bump persistence test timeout to 5m.
fix param creation for test