Fix ansible-lint errors and warnings.

- Allow "Git checkouts must contain explicit version" error.
- No changed is reported on FAILURE.

.ansible-lint

@@ -1,3 +1,4 @@
 ---
 skip_list:
+- '401'
 - '403'

tests/tasks/setup_ipa.yml

@@ -52,6 +52,7 @@
   rescue:
     - name: FAILURE - check entropy
       command: cat /proc/sys/kernel/random/entropy_avail
+      changed_when: false
     - name: FAILURE - get logs for debugging
       shell: |-
         set -euo pipefail
@@ -64,6 +65,7 @@
         chmod '0644' /tmp/ipalogs.tgz
       args:
         warn: false  # suppress 'unarchive' warning
+      changed_when: false
     - name: FAILURE - grab archive
       fetch:
         src: /tmp/ipalogs.tgz
@@ -78,6 +80,7 @@
       args:
         warn: false  # suppress 'unarchive' warning
       delegate_to: 127.0.0.1
+      changed_when: false
     - name: failed
       fail:
         msg: failed