koji_builder: try and allow coredumps on buildhw-a64 builders

We want to get core dumps from these builders in order to try and track
down livemedia failures in python with SIGILL.
https://bugzilla.redhat.com/show_bug.cgi?id=2247319
We just enable this on those builders for now and we set it so it is the
limit for the systemd-nspawn containers that mock uses.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

roles/koji_builder/tasks/main.yml

@@ -384,3 +384,22 @@
   tags:
   - koji_builder
   - koji_builder/osbuildapi
+
+- name: create override dir for systemd-nspawn containers config
+  file:
+       state: directory
+       owner: root
+       group: root
+       mode: 0755
+       path: /etc/systemd/system/machine-.scope.d
+  when: inventory_hostname.startswith(('buildhw-a64'))
+  tags:
+  - koji_builder
+  - koji_builder/nspawn
+
+- name: create override config for systemd-nspawn containers to allow coredumps
+  template: src=nspawn-override.conf dest=/etc/systemd/system/machine-.scope.d/80-infra.conf mode=0644
+  when: inventory_hostname.startswith(('buildhw-a64'))
+  tags:
+  - koji_builder
+  - koji_builder/nspawn

roles/koji_builder/templates/nspawn-override.conf

@@ -0,0 +1,2 @@
+[Scope]
+LimitCORE=infinity