Fixing System Dashboards for Charmed OSM

Change-Id: I53f8acf12a284f2479d79f614fb1ee9afcfde618
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>
diff --git a/installers/charm/grafana/src/pod_spec.py b/installers/charm/grafana/src/pod_spec.py
index 1701df0..609c466 100644
--- a/installers/charm/grafana/src/pod_spec.py
+++ b/installers/charm/grafana/src/pod_spec.py
@@ -248,26 +248,26 @@
         dashboards.extend(
             [
                 {
-                    "path": "kafka_exporter_dashboard.yaml",
-                    "content": Path("files/kafka_exporter_dashboard.yaml").read_text(),
+                    "path": "kafka_exporter_dashboard.json",
+                    "content": Path("files/kafka_exporter_dashboard.json").read_text(),
                 },
                 {
-                    "path": "mongodb_exporter_dashboard.yaml",
+                    "path": "mongodb_exporter_dashboard.json",
                     "content": Path(
-                        "files/mongodb_exporter_dashboard.yaml"
+                        "files/mongodb_exporter_dashboard.json"
                     ).read_text(),
                 },
                 {
-                    "path": "mysql_exporter_dashboard.yaml",
-                    "content": Path("files/mysql_exporter_dashboard.yaml").read_text(),
+                    "path": "mysql_exporter_dashboard.json",
+                    "content": Path("files/mysql_exporter_dashboard.json").read_text(),
                 },
                 {
-                    "path": "nodes_exporter_dashboard.yaml",
-                    "content": Path("files/nodes_exporter_dashboard.yaml").read_text(),
+                    "path": "nodes_exporter_dashboard.json",
+                    "content": Path("files/nodes_exporter_dashboard.json").read_text(),
                 },
                 {
-                    "path": "summary_dashboard.yaml",
-                    "content": Path("files/summary_dashboard.yaml").read_text(),
+                    "path": "summary_dashboard.json",
+                    "content": Path("files/summary_dashboard.json").read_text(),
                 },
             ]
         )