Ant BuildException has occured: patchfile /w/workspace/genius-validate-autorelease-carbon/odlparent/karaf/karaf4-parent/target/assembly/patches/karaf-instance.patch doesn't exist

https://git.opendaylight.org/gerrit/#/c/49487/ build, a totally unrelated minor change, just failed with what looks like a regression from odlparent, filing this as blocker as I expect all Gerrits are about to be affected by this:

[INFO] — maven-install-plugin:2.5.2:install (default-install) @ karaf-parent —
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.8:run (patch-karaf-scripts) on project karaf4-parent: An Ant BuildException has occured: patchfile /w/workspace/genius-validate-autorelease-carbon/odlparent/karaf/karaf4-parent/target/assembly/patches/karaf-instance.patch doesn't exist
[ERROR] around Ant part ...<patch patchfile="/w/workspace/genius-validate-autorelease-carbon/odlparent/karaf/karaf4-parent/target/assembly/patches/karaf-instance.patch" originalfile="/w/workspace/genius-validate-autorelease-carbon/odlparent/karaf/karaf4-parent/target/assembly/bin/instance" failonerror="true"/>... @ 5:287 in /w/workspace/genius-validate-autorelease-carbon/odlparent/karaf/karaf4-parent/target/antrun/build-main.xml