Support TFC agent 1.15.4

Error thrown in latest terraform agent

Latest terraform client has additional 'test' job type

changed title from Error thrown in latest terraform agent to Support TFC agent 1.15.4

changed the description

assigned to @mjc

created branch 142-error-thrown-in-latest-terraform-agent to address this issue

mentioned in merge request !98 (merged)

mentioned in commit ca10658a

mentioned in commit 71a6db61

mentioned in commit 4171f634

closed via merge request !98 (merged)

mentioned in commit b926d1ef