This patch removes the deprecated agent lookup/heartbeat as vendor
passthru functionality from most of the drivers in following modules:
- ironic.drivers.agent
- ironic.drivers.pxe
- ironic.drivers.drac
- ironic.drivers.irmc
Some drivers are left untouched though:
- iLO and OneView drivers are a bit more complicated and will be fixed
in follow-up patches
- iBoot, WoL and AMT drivers will be fixed in ironic-staging-drivers
repo first and then removed from ironic tree.
Change-Id: Ia9ee46cda68ef823d1fe8e5ea03c1d5948810a50
Partial-Bug: #1640533