copr: backend: prunerepo hotfix

roles/copr/backend/files/patches/prunerepo-dataloss.patch

@@ -0,0 +1,20 @@
+--- /usr/bin/prunerepo	2019-04-01 18:02:57.000000000 +0000
++++ /usr/bin/prunerepo	2019-11-12 09:20:27.292341122 +0000
+@@ -40,6 +40,7 @@
+     '--refresh',
+     '--queryformat="%{location}"',
+     '--quiet',
++    '--setopt=skip_if_unavailable=False',
+ ]
+ 
+ get_latest_packages_cmd = get_all_packages_cmd + [ '--latest-limit=1' ]
+@@ -117,6 +118,9 @@
+     log_info('Removing obsoleted packages...')
+     was_deletion = False
+     latest_rpms = get_rpms(get_latest_packages_cmd)
++    if not latest_rpms:
++        log_info("No RPMs available")
++        return was_deletion
+     all_rpms = get_rpms(get_all_packages_cmd)
+     to_remove_rpms = set(all_rpms) - set(latest_rpms)
+     for rpm in to_remove_rpms:

roles/copr/backend/tasks/main.yml

@@ -33,6 +33,11 @@
          dest=/usr/bin/copr-backend-process-action
   tags: patches
 
+- name: patch for prunerepo, issue 1090
+  patch: src=patches/prunerepo-dataloss.patch
+         dest=/usr/bin/prunerepo
+  tags: patches
+
 - name: install openstackclient for image preparation
   dnf: state=present name=python3-openstackclient
   when: devel|bool