Omit dahsboard on elk setup by default

With the introduction of the "infrustructure" panel and "canvas" becoming
stable, there's not a lot of reason to import the  general beat dashboards.
The default dashboard are almost always in a state of disrepare and take a
long time to import on high traffic clusters.

This channge removes the default dashboard from the beat setup role by
default. If a deployer wishes to renable the default dashboards, or add any
other beat flags, the variable `elastic_setup_flags` can be used to extend
the setup.

Change-Id: If44845f53e4d0cb1e91ec804060316fb852b4bfa
Signed-off-by: Kevin Carter <kevin@cloudnull.com>

elk_metrics_6x/fieldRefresh.yml

@@ -88,6 +88,14 @@
           retries: 6
           delay: 30
           run_once: true
+      rescue:
+        - name: Notify deployer
+          debug:
+            msg: >-
+              Index pattern refresh was not possible at this time. Either there are no dashboards
+              loaded or the index being refreshed does not exist. While the task failed, this is
+              not a fatal error, so the play has been rescued.
+          run_once: true
       when:
         - index_fields_return.status == 200
         - index_fields_format_return.status == 200

elk_metrics_6x/roles/elastic_beat_setup/defaults/main.yml

@@ -18,7 +18,7 @@ elastic_setup_flags:
   - "--template"
   - "--pipelines"
   - "--machine-learning"
-  - "--dashboards"
+  # - "--dashboards"
 
 # Setup options are cast as a string with, one option per line.
 elastic_beat_setup_options: >-

overlay-inventories/osa-integration-inventory.yml

@@ -111,6 +111,10 @@ all_systems:
           vars:
             elastic_skydive_retention: 2  # Elastic retention set to 2 days max
             elastic_skydive_size: 51200   # Elastic retention set to 50GiB max
+            elastic_setup_flags:
+              - "--template"
+              - "--pipelines"
+              - "--machine-learning"
           children:
             elastic-logstash_all:
               children: