taskotron-trigger: make rules more readable

But expanding the structured fields.

roles/taskotron/taskotron-trigger/templates/trigger_rules.yml.j2

@@ -1,51 +1,71 @@
 ---
-- when: {message_type: KojiBuildPackageCompleted}
+- when:
+    message_type: KojiBuildPackageCompleted
   do:
-    - {tasks: [rpmlint, rpmgrill, python-versions]}
+    - tasks:
+        - python-versions
+        - rpmgrill
+        - rpmlint
 
 - when:
     message_type: KojiBuildPackageCompleted
     name:
-      $nin: [{{ trigger_abicheck_blacklist | join(',') }}]
+      $nin:
+        - "{{ trigger_abicheck_blacklist | join(',') }}"
   do:
-    - {tasks: [abicheck]}
+    - tasks:
+        - abicheck
 
 - when:
     message_type: KojiTagChanged
-    tag: {$regex: '/^f[0-9]{2}-updates(-testing)?-pending$$/'}
+    tag:
+      $regex: '/^f[0-9]{2}-updates(-testing)?-pending$$/'
   do:
-    - {tasks: [rpmdeplint]}
+    - tasks:
+        - rpmdeplint
 
-- when: {message_type: DistGitCommit, namespace: modules}
+- when:
+    message_type: DistGitCommit
+    namespace: modules
   do:
-    - {tasks: [check_modulemd]}
+    - tasks:
+        - check_modulemd
 
 - when:
     message_type: GitHubPullRequestOpened
-    repo_name: {$regex: '/^container-images\/.+/'}
+    repo_name:
+      $regex: '/^container-images\/.+/'
   do:
-    - {tasks: [mtf-containers]}
+    - tasks:
+        - mtf-containers
 
 {% if deployment_type in ['stg', 'prod'] %}
 {# these tasks are not ansiblized yet #}
 - when:
     message_type: ModuleBuildComplete
   do:
-    - {tasks: [modularity-testing-framework]}
+    - tasks:
+        - modularity-testing-framework
 
-- when: {message_type: KojiBuildPackageCompleted, name: docker}
+- when:
+    message_type: KojiBuildPackageCompleted
+    name: docker
   do:
-    - {tasks: [dockerautotest]}
+    - tasks:
+        - dockerautotest
 {% endif %}
 
 {# disabled due to missing nested virt: https://pagure.io/taskotron/issue/239
 - when:
     message_type: AtomicCompose
   do:
-    - {tasks: [upstream-atomic, fedora-cloud-tests]}
+    - tasks:
+        - upstream-atomic
+        - fedora-cloud-tests
 
 - when:
     message_type: CloudCompose
   do:
-    - {tasks: [fedora-cloud-tests]}
+    - tasks:
+        - fedora-cloud-tests
 #}