tripleo: index /var/log/*.log.txt files

Right now, we only index logstash.txt, which is fine now. The file is
~100K.
But this file doesn't context OpenStack services logs, and other logs
we want to index, so we can use elastic-recheck more powerfully.

So this patch index both undercloud & subnodes (overcloud) .log.txt
files present in /var/log/*.

Change-Id: Id5b9be6130e4e4506418a254a5e57e105fa4d03c

roles/submit-logstash-jobs/defaults/main.yaml

@@ -70,6 +70,14 @@ logstash_processor_config:
       tags:
         - console
         - postci
+    - name: undercloud/var/log/.*\.log\.txt
+      tags:
+        - console
+        - postci
+    - name: subnode-.*/var/log/.*\.log\.txt
+      tags:
+        - console
+        - postci
     # wildcard logs
     - name: devstack-gate-.*\.txt
       tags: