Fixed the interval of intel_rdt plugin and Grafana dashboard settings
to follow the correct interval.
Change-Id: Ia792c6b6308526d82f153275d5d5393b0aea312d
Signed-off-by: Kamil Wiatrowski <kamilx.wiatrowski@intel.com>
 # limitations under the License.
 
 <LoadPlugin intel_rdt>
-  Interval "{{ rdt_interval }}"
+  Interval {{ rdt_interval }}
 </LoadPlugin>
 
 <Plugin intel_rdt>
 
             "datasource": "collectd",\r
             "fill": 1,\r
             "id": 1,\r
+            "interval": "1s",
             "legend": {\r
               "alignAsTable": true,\r
               "avg": true,\r
             "datasource": "collectd",\r
             "fill": 1,\r
             "id": 2,\r
+            "interval": "1s",
             "legend": {\r
               "alignAsTable": true,\r
               "avg": true,\r
             "datasource": "collectd",\r
             "fill": 1,\r
             "id": 3,\r
+            "interval": "1s",
             "legend": {\r
               "alignAsTable": true,\r
               "avg": true,\r
             "datasource": "collectd",\r
             "fill": 1,\r
             "id": 4,\r
+            "interval": "1s",
             "legend": {\r
               "alignAsTable": true,\r
               "avg": true,\r
                   },\r
                   {\r
                     "params": [\r
-                      "none"\r
+                      "null"
                     ],\r
                     "type": "fill"\r
                   }\r