MANTA-4675 manta/triton agent builds need Jenkinsfile changes to launch agents-installer
MANTA-4675 manta/triton agent builds need Jenkinsfile changes to launch agents-installer

MANTA-4629 add Jenkinsfiles to Manta repositories

Reviewed by: Trent Mick <trentm@gmail.com>

joyent/manta-marlin,joyent/manta-marlin,joyent/manta-marlin