Add launchpadlib as a dep

This adds launchpadlib as a dep to jeepyb so that our assemble script
can install it alongside all the other jeepyb deps when building Gerrit
images. This way we don't need to install python3-launchpadlib anymore
and can use our base python images with Gerrit.

Depends-On: https://review.opendev.org/c/opendev/system-config/+/870118
Change-Id: I94fb9c7f16aa6c12840b54dac5e272950b4dea0c
1 file changed