Move the input and output sections to example files

In preparation for consuming the filter section by system-config,
move the input and output to example files to not consume them as well.

Change-Id: I5e0853783db8c793dde387a5f625a526f6c3b4aa

filters/example-input.conf

@@ -0,0 +1,8 @@
+input {
+  tcp {
+    host => "localhost"
+    port => 9999
+    codec => json_lines {}
+    type => "jenkins"
+  }
+}

filters/example-output.conf

@@ -0,0 +1,7 @@
+output {
+  elasticsearch_http {
+    host => "localhost"
+    manage_template => false
+    flush_size => 1024
+  }
+}

filters/openstack-filters.conf

@@ -1,12 +1,3 @@
-input {
-  tcp {
-    host => "localhost"
-    port => 9999
-    codec => json_lines {}
-    type => "jenkins"
-  }
-}
-
 # You can check grok patterns at http://grokdebug.herokuapp.com/
 filter {
   if "screen" in [tags] and [message] =~ "^\+ " {
@@ -114,11 +105,3 @@ filter {
     }
   }
 }
-
-output {
-  elasticsearch_http {
-    host => "localhost"
-    manage_template => false
-    flush_size => 1024
-  }
-}