copr-fe: automatically comment chroots from config

roles/copr/frontend/files/chroots.conf

@@ -0,0 +1,16 @@
+# vim: ft=python
+
+config["rules"] = [{
+        "match": ["fedora-34-i386", "fedora-35-i386", "fedora-36-i386"],
+        "comment": "Non-released Koji packages, <a href='https://fedoraproject.org/wiki/Changes/Noi686Repositories'>more info</a> why you probably don't want this one."
+}, {
+        "match": ["epel-8", "epel-9"],
+        "comment": "Builds are done against RHEL chroots + EPEL.",
+}, {
+        "match": ["epel-7"],
+        "comment": "Builds are done against CentOS 7 + EPEL 7.",
+}, {
+        "match_type": "arch",
+        "match": ["armhfp"],
+        "comment": "An emulated chroot. Builds are done on x86_64.",
+}]

roles/copr/frontend/tasks/main.yml

@@ -83,6 +83,12 @@
   - config
   - copr_infrastructure_password
 
+- name: install config for 'copr-frontend chroots-template'
+  copy: src="chroots.conf" dest=/etc/copr/chroots.conf mode=600
+        owner=copr-fe group=copr-fe
+  tags:
+  - config
+
 - name: enable and start redis  # TODO: .service in copr-backend should depend on redis
   service: name=redis enabled=yes state=started
   when: not services_disabled|bool