adding counterMax option to opentsdb

src/app/partials/opentsdb/editor.html

@@ -89,6 +89,19 @@
                    ng-model="target.isCounter"
                    ng-change="targetBlur()">
           </li>
+          <li class="grafana-target-segment" ng-hide="!target.isCounter">
+            Counter Max:
+          </li>
+          <li ng-hide="!target.isCounter">
+            <input type="text"
+                   class="grafana-target-segment-input input-medium"
+                   ng-disabled="!target.shouldComputeRate"
+                   ng-model="target.counterMax"
+                   spellcheck='false'
+                   placeholder="Counter max value"
+                   ng-blur="targetBlur()"
+                   />
+          </li>
           <li class="grafana-target-segment">
             Alias:
           </li>

src/app/services/opentsdb/opentsdbDatasource.js

@@ -136,6 +136,10 @@ function (angular, _, kbn) {
         query.rateOptions = {
           counter: !!target.isCounter
         };
+
+        if (target.counterMax && target.counterMax.length) {
+            query.rateOptions['counterMax'] = parseInt(target.counterMax);
+        }
       }
 
       if (target.shouldDownsample) {