Disable multi-selection for variables in resources dashboards. (grafana/cortex-jsonnet#251)

* Disable multi-selection for variables in resources dashboards.

* CHANGELOG.md

Author: pstibrany

jsonnet/mimir-mixin/dashboards/alertmanager-resources.libsonnet

@@ -3,7 +3,7 @@ local utils = import 'mixin-utils/utils.libsonnet';
 (import 'dashboard-utils.libsonnet') {
   'alertmanager-resources.json':
     ($.dashboard('Cortex / Alertmanager Resources') + { uid: '68b66aed90ccab448009089544a8d6c6' })
-    .addClusterSelectorTemplates()
+    .addClusterSelectorTemplates(false)
     .addRow(
       $.row('Gateway')
       .addPanel(

jsonnet/mimir-mixin/dashboards/dashboard-utils.libsonnet

@@ -14,7 +14,7 @@ local utils = import 'mixin-utils/utils.libsonnet';
         then self.addRow(row)
         else self,
 
-      addClusterSelectorTemplates()::
+      addClusterSelectorTemplates(multi=true)::
         local d = self {
           tags: $._config.tags,
           links: [
@@ -31,11 +31,19 @@ local utils = import 'mixin-utils/utils.libsonnet';
           ],
         };
 
-        if $._config.singleBinary
-        then d.addMultiTemplate('job', 'cortex_build_info', 'job')
-        else d
-             .addMultiTemplate('cluster', 'cortex_build_info', 'cluster')
-             .addMultiTemplate('namespace', 'cortex_build_info', 'namespace'),
+        if multi then
+          if $._config.singleBinary
+          then d.addMultiTemplate('job', 'cortex_build_info', 'job')
+          else d
+               .addMultiTemplate('cluster', 'cortex_build_info', 'cluster')
+               .addMultiTemplate('namespace', 'cortex_build_info', 'namespace')
+        else
+          if $._config.singleBinary
+          then d.addTemplate('job', 'cortex_build_info', 'job')
+          else d
+               .addTemplate('cluster', 'cortex_build_info', 'cluster')
+               .addTemplate('namespace', 'cortex_build_info', 'namespace'),
+
     },
 
   // The mixin allow specialism of the job selector depending on if its a single binary

jsonnet/mimir-mixin/dashboards/reads-resources.libsonnet

@@ -3,7 +3,7 @@ local utils = import 'mixin-utils/utils.libsonnet';
 (import 'dashboard-utils.libsonnet') {
   'cortex-reads-resources.json':
     ($.dashboard('Cortex / Reads Resources') + { uid: '2fd2cda9eea8d8af9fbc0a5960425120' })
-    .addClusterSelectorTemplates()
+    .addClusterSelectorTemplates(false)
     .addRow(
       $.row('Gateway')
       .addPanel(

jsonnet/mimir-mixin/dashboards/writes-resources.libsonnet

@@ -3,7 +3,7 @@ local utils = import 'mixin-utils/utils.libsonnet';
 (import 'dashboard-utils.libsonnet') {
   'cortex-writes-resources.json':
     ($.dashboard('Cortex / Writes Resources') + { uid: 'c0464f0d8bd026f776c9006b0591bb0b' })
-    .addClusterSelectorTemplates()
+    .addClusterSelectorTemplates(false)
     .addRow(
       $.row('Gateway')
       .addPanel(