Bump the new grafana version '7.5.0-pre'

Signed-off-by: Jeremy MAURO <jeremy.mauro@gmail.com>

docker-compose.yaml

@@ -3,7 +3,7 @@ version: "3.7"
 
 services:
   grafana:
-    image: grafana/grafana:7.1.5
+    image: docker.local/grafana-ubuntu:7.5.0-pre
     volumes:
       - "grafana-storage:/var/lib/grafana"
       - "./grafana/provisioning/datasources:/etc/grafana/provisioning/datasources"

grafana/provisioning/dashboards/connectivity/speedtest.json

@@ -14,7 +14,7 @@
       "type": "grafana",
       "id": "grafana",
       "name": "Grafana",
-      "version": "7.1.5"
+      "version": "7.5.0-pre"
     },
     {
       "type": "panel",
@@ -119,7 +119,7 @@
         "text": {},
         "textMode": "auto"
       },
-      "pluginVersion": "7.1.5",
+      "pluginVersion": "7.5.0-pre",
       "targets": [
         {
           "groupBy": [
@@ -217,7 +217,7 @@
         "text": {},
         "textMode": "auto"
       },
-      "pluginVersion": "7.1.5",
+      "pluginVersion": "7.5.0-pre",
       "targets": [
         {
           "groupBy": [
@@ -321,7 +321,7 @@
         "text": {},
         "textMode": "auto"
       },
-      "pluginVersion": "7.1.5",
+      "pluginVersion": "7.5.0-pre",
       "targets": [
         {
           "groupBy": [
@@ -409,7 +409,7 @@
         "alertThreshold": true
       },
       "percentage": false,
-      "pluginVersion": "7.1.5",
+      "pluginVersion": "7.5.0-pre",
       "pointradius": 2,
       "points": true,
       "renderer": "flot",
@@ -584,7 +584,7 @@
         "alertThreshold": true
       },
       "percentage": false,
-      "pluginVersion": "7.1.5",
+      "pluginVersion": "7.5.0-pre",
       "pointradius": 2,
       "points": true,
       "renderer": "flot",