Merge pull request #458 from jamie-cyber1/fix_unit2

Fix two broken tests due to remove of debug statements
OOIION-1709: Add metamodel generator
Bumped ion-definitions
Bumped ion-definitions
Merge pull request #461 from mmeisinger/fix1709_meta_r2

OOIION-1709: Update metadata model
Adds stack trace to locals() in breakpoint for debug
Merge pull request #463 from lukecampbell/bt-r2

TEST - Adds stack trace to locals() in breakpoint for debug R2
Patch int_test so not ALL os.kill gets mocked