Added Grafana Datasource provisioning

Signed-off-by: Brian Christner <brian.christner@gmail.com>

grafana/config.monitoring

@@ -0,0 +1,2 @@
+GF_SECURITY_ADMIN_PASSWORD=foobar
+GF_USERS_ALLOW_SIGN_UP=false

grafana/provisioning/datasources/datasource.yml

@@ -0,0 +1,50 @@
+# config file version
+apiVersion: 1
+
+# list of datasources that should be deleted from the database
+deleteDatasources:
+  - name: Graphite
+    orgId: 1
+
+# list of datasources to insert/update depending
+# whats available in the database
+datasources:
+  # <string, required> name of the datasource. Required
+- name: Graphite
+  # <string, required> datasource type. Required
+  type: graphite
+  # <string, required> access mode. direct or proxy. Required
+  access: proxy
+  # <int> org id. will default to orgId 1 if not specified
+  orgId: 1
+  # <string> url
+  url: http://localhost:8080
+  # <string> database password, if used
+  password:
+  # <string> database user, if used
+  user:
+  # <string> database name, if used
+  database:
+  # <bool> enable/disable basic auth
+  basicAuth:
+  # <string> basic auth username
+  basicAuthUser:
+  # <string> basic auth password
+  basicAuthPassword:
+  # <bool> enable/disable with credentials headers
+  withCredentials:
+  # <bool> mark as default datasource. Max one per org
+  isDefault:
+  # <map> fields that will be converted to json and stored in json_data
+  jsonData:
+     graphiteVersion: "1.1"
+     tlsAuth: true
+     tlsAuthWithCACert: true
+  # <string> json object of data that will be encrypted.
+  secureJsonData:
+    tlsCACert: "..."
+    tlsClientCert: "..."
+    tlsClientKey: "..."
+  version: 1
+  # <bool> allow users to edit datasources from the UI.
+  editable: false