MODE-2394: Due to teiid vdb schema changes, update the sequencer accordingly

* Updates the Vdb Sequencer to reflect the changes made to the Teiid Vdb
  cnd schema. In light of the changes made to the latter to reflect Teiid's
  own latest Vdb schema, the sequencer will now observe the following:
  ** vdb connection type
  ** vdb name
  ** multiple model sources
  ** data role grant-all flag
  ** data role permission conditions and masks
  ** data role allow language permission

* Updates sequencer tests to test for the new changes
Merge pull request #1353 from Teiid-Designer/MODE-2394

MODE-2394: Due to teiid vdb schema changes, update the sequencer accordi...