Fix rsyslog permission error in github ubuntu tests from apparmor (#15717)

* Add test to detect rsyslog config problems

* Get dmesg output

* Disable apparmor for rsyslogd

awx/main/tests/live/tests/test_devel_image.py

@@ -0,0 +1,10 @@
+import os
+
+RSYSLOG_CONFIG = '/var/lib/awx/rsyslog/rsyslog.conf'
+
+
+def test_rsyslog_config_readable():
+    with open(RSYSLOG_CONFIG, 'r') as f:
+        content = f.read()
+        assert '/var/lib/awx/rsyslog' in content
+    assert oct(os.stat(RSYSLOG_CONFIG).st_mode) == '0o100640'