rsyslogd: use %rawmsg-after-pri% instead of %msg%

after some prolonged RFC reading and tinkering w/ rsyslogd...

cpython's SysLogHandler doesn't emit RFC3164 formatted messages
in the format you'd expect; it's missing the ISO date, hostname, etc...
along with other header values; the handler implementation relies on you
to specify a syslog-like formatter (we've replaced all of this with our
own *custom* logstash-esque formatter that effectively outputs valid JSON
- without dates and other syslog header values prepended)

because of this unanticipated format, rsyslogd chokes when trying to
parse the message's parts;  AWX is emitting:

<priority>RAWJSON

...so the usage of `%msg%` isn't going to work for us, because rsyslog
tries to parse *all* of the possible headers (and yells, because it
can't find a date to parse):

see: https://www.rsyslog.com/files/temp/doc-indent/configuration/properties.html#message-properties

this is fine, because we don't *need* any of that message parsing
anyways; in the end, we're *just* interested in forwarding the raw
JSON/text content to the third party log handler

installer/roles/kubernetes/templates/deployment.yml.j2

@@ -98,8 +98,6 @@ spec:
               mountPath: "/var/run/supervisor"
             - name: rsyslog-socket
               mountPath: "/var/run/rsyslog"
-            - name: rsyslog-dir
-              mountPath: "/var/lib/awx/rsyslog/"
 {% if ca_trust_dir is defined %}
             - name: {{ kubernetes_deployment_name }}-ca-trust-dir
               mountPath: "/etc/pki/ca-trust/source/anchors/"
@@ -148,11 +146,6 @@ spec:
               subPath: supervisor_task.conf
               readOnly: true
 
-            - name: {{ kubernetes_deployment_name }}-rsyslog-config
-              mountPath: "/var/lib/awx/rsyslog/rsyslog.conf"
-              subPath: rsyslog.conf
-              readOnly: true
-
             - name: {{ kubernetes_deployment_name }}-secret-key
               mountPath: "/etc/tower/SECRET_KEY"
               subPath: SECRET_KEY
@@ -189,8 +182,6 @@ spec:
               mountPath: "/var/run/supervisor"
             - name: rsyslog-socket
               mountPath: "/var/run/rsyslog"
-            - name: rsyslog-dir
-              mountPath: "/var/lib/awx/rsyslog/"
 {% if ca_trust_dir is defined %}
             - name: {{ kubernetes_deployment_name }}-ca-trust-dir
               mountPath: "/etc/pki/ca-trust/source/anchors/"
@@ -336,8 +327,6 @@ spec:
           emptyDir: {}
         - name: rsyslog-socket
           emptyDir: {}
-        - name: rsyslog-dir
-          emptyDir: {}
 {% if ca_trust_dir is defined %}
         - name: {{ kubernetes_deployment_name }}-ca-trust-dir
           hostPath:
@@ -414,13 +403,6 @@ spec:
               - key: supervisor-task-config
                 path: 'supervisor_task.conf'
 
-        - name: {{ kubernetes_deployment_name }}-rsyslog-config
-          configMap:
-            name: {{ kubernetes_deployment_name }}-rsyslog-config
-            items:
-              - key: rsyslog-config
-                path: 'rsyslog.conf'
-
         - name: {{ kubernetes_deployment_name }}-secret-key
           secret:
             secretName: "{{ kubernetes_deployment_name }}-secrets"

installer/roles/kubernetes/templates/rsyslog.yml.j2

@@ -1,14 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ kubernetes_deployment_name }}-rsyslog-config
-  namespace: {{ kubernetes_namespace }}
-data:
-  rsyslog-config: |
-    $WorkDirectory /var/lib/awx/rsyslog
-    $MaxMessageSize 700000
-    $IncludeConfig /var/lib/awx/rsyslog/conf.d/*.conf
-    $ModLoad imuxsock
-    input(type="imuxsock" Socket="/var/run/rsyslog/rsyslog.sock" unlink="on")
-    template(name="awx" type="string" string="%msg%")
-    action(type="omfile" file="/dev/null")