Simpligy logstash nodes in groups.yaml

Match logstash-worker and logstash.o.o nodes with globs. This allows us
to launch new servers without needing to add them to the groups file
first.

Note that logstash.o.o is currently hosted by logstash01.openstack.org
so the existing groups.yaml content is broken for this host.

Change-Id: Iea9b5815a31355925979e6d4da5c578a64af7972

inventory/groups.yaml

@@ -89,28 +89,9 @@ groups:
     - kdc01.openstack.org
     - kdc04.openstack.org
   logstash:
-    - logstash.openstack.org
+    - logstash[0-9]*.openstack.org
   logstash-worker:
-    - logstash-worker01.openstack.org
-    - logstash-worker02.openstack.org
-    - logstash-worker03.openstack.org
-    - logstash-worker04.openstack.org
-    - logstash-worker05.openstack.org
-    - logstash-worker06.openstack.org
-    - logstash-worker07.openstack.org
-    - logstash-worker08.openstack.org
-    - logstash-worker09.openstack.org
-    - logstash-worker10.openstack.org
-    - logstash-worker11.openstack.org
-    - logstash-worker12.openstack.org
-    - logstash-worker13.openstack.org
-    - logstash-worker14.openstack.org
-    - logstash-worker15.openstack.org
-    - logstash-worker16.openstack.org
-    - logstash-worker17.openstack.org
-    - logstash-worker18.openstack.org
-    - logstash-worker19.openstack.org
-    - logstash-worker20.openstack.org
+    - logstash-worker[0-9]*.openstack.org
   mailman:
     - lists-dev01.openstack.org
     - lists.katacontainers.io
@@ -202,27 +183,8 @@ groups:
     - lists-dev01.openstack.org
     - lists.katacontainers.io
     - lists.openstack.org
-    - logstash-worker01.openstack.org
-    - logstash-worker02.openstack.org
-    - logstash-worker03.openstack.org
-    - logstash-worker04.openstack.org
-    - logstash-worker05.openstack.org
-    - logstash-worker06.openstack.org
-    - logstash-worker07.openstack.org
-    - logstash-worker08.openstack.org
-    - logstash-worker09.openstack.org
-    - logstash-worker10.openstack.org
-    - logstash-worker11.openstack.org
-    - logstash-worker12.openstack.org
-    - logstash-worker13.openstack.org
-    - logstash-worker14.openstack.org
-    - logstash-worker15.openstack.org
-    - logstash-worker16.openstack.org
-    - logstash-worker17.openstack.org
-    - logstash-worker18.openstack.org
-    - logstash-worker19.openstack.org
-    - logstash-worker20.openstack.org
-    - logstash.openstack.org
+    - logstash-worker[0-9]*.openstack.org
+    - logstash[0-9]*.openstack.org
     - mirror-update01.openstack.org
     - mirror01.bhs1.ovh.openstack.org
     - mirror01.ca-ymq-1.vexxhost.openstack.org