liquibase-maven-plugin 3.6.3 -> 3.10.3 (#4126)
liquibase-maven-plugin 3.6.3 -> 3.10.3 (#4126)

* switch unit_test to use PG11 on Circle

* take migrations from circle unit_test

* no default values

* reapply sourcefile policy

* fix drop policy

* split off policy changesets

* more policies

* correct table

* try bumping liquibase-maven-plugin

* revert unit tests Postgres to 9 (admit defeat for now)
ga4gh/dockstore,ga4gh/dockstore,ga4gh/dockstore