Remove rsyslogd xconsole workaround

This was added in 2013 with I68594d489ab50ef25d351162b9dcb50ca003c409
to avoid rsyslog trying to open /dev/xconsole, and is no longer
relevant.

To get back to the upstream default, remove the modified file, purge
the package and re-install it.  We can remove this shortly after it
has applied to servers.

Change-Id: Icf47abc295a6de8d43553f0a4ebdc6ce1483284e

playbooks/roles/base/server/files/rsyslog.d_50-default.conf

@@ -1,69 +0,0 @@
-#  Default rules for rsyslog.
-#
-#			For more information see rsyslog.conf(5) and /etc/rsyslog.conf
-
-#
-# First some standard log files.  Log by facility.
-#
-auth,authpriv.*			/var/log/auth.log
-*.*;auth,authpriv.none		-/var/log/syslog
-#cron.*				/var/log/cron.log
-#daemon.*			-/var/log/daemon.log
-kern.*				-/var/log/kern.log
-#lpr.*				-/var/log/lpr.log
-mail.*				-/var/log/mail.log
-#user.*				-/var/log/user.log
-
-#
-# Logging for the mail system.  Split it up so that
-# it is easy to write scripts to parse these files.
-#
-#mail.info			-/var/log/mail.info
-#mail.warn			-/var/log/mail.warn
-mail.err			/var/log/mail.err
-
-#
-# Logging for INN news system.
-#
-news.crit			/var/log/news/news.crit
-news.err			/var/log/news/news.err
-news.notice			-/var/log/news/news.notice
-
-#
-# Some "catch-all" log files.
-#
-#*.=debug;\
-#	auth,authpriv.none;\
-#	news.none;mail.none	-/var/log/debug
-#*.=info;*.=notice;*.=warn;\
-#	auth,authpriv.none;\
-#	cron,daemon.none;\
-#	mail,news.none		-/var/log/messages
-
-#
-# Emergencies are sent to everybody logged in.
-#
-*.emerg                                :omusrmsg:*
-
-#
-# I like to have messages displayed on the console, but only on a virtual
-# console I usually leave idle.
-#
-#daemon,mail.*;\
-#	news.=crit;news.=err;news.=notice;\
-#	*.=debug;*.=info;\
-#	*.=notice;*.=warn	/dev/tty8
-
-# The named pipe /dev/xconsole is for the `xconsole' utility.  To use it,
-# you must invoke `xconsole' with the `-file' option:
-#
-#    $ xconsole -file /dev/xconsole [...]
-#
-# NOTE: adjust the list below, or you'll go crazy if you have a reasonably
-#      busy site..
-#
-# Commenting out since we don't install xconsoles on headless servers.
-#daemon.*;mail.*;\
-#	news.err;\
-#	*.=debug;*.=info;\
-#	*.=notice;*.=warn	|/dev/xconsole

playbooks/roles/base/server/tasks/Debian.yaml

@@ -56,12 +56,21 @@
     src: debian_limits.conf
     dest: /etc/security/limits.d/60-nofile-limit.conf
 
+# NOTE(ianw): 2020-10-08: custom file no longer required; remove this
+# reinstall after this has applied.
 - name: Custom rsyslog config to disable /dev/xconsole noise
-  copy:
-    mode: 0644
-    src: rsyslog.d_50-default.conf
-    dest: /etc/rsyslog.d/50-default.conf
-  notify: Restart rsyslog
+  file:
+    path: /etc/rsyslog.d/50-default.conf
+    state: absent
+- name: Purge rsyslog config
+  apt:
+    name: rsyslog
+    state: absent
+    purge: yes
+- name: Reinstall rsyslog to get default config back
+  apt:
+    name: rsyslog
+    state: present
 
 - name: Install apt-daily 10periodic file for unattended-upgrades
   copy: