Allow basic auth when datasource is adding

This patch fixes an issue to use basic auth when the datasource is
adding for the first time. It also adds a delay when service is started.

_states/grafana3_datasource.py

@@ -127,12 +127,20 @@ def present(name,
             ret['changes'] = None
             ret['comment'] = 'Data source {0} already up-to-date'.format(name)
     else:
+        if profile.get('grafana_token', False):
             requests.post(
                 '{0}/api/datasources'.format(profile['grafana_url']),
                 data,
                 headers=_get_headers(profile),
                 timeout=profile.get('grafana_timeout', 3),
             )
+        else:
+            requests.put(
+                '{0}/api/datasources'.format(profile['grafana_url']),
+                data,
+                auth=_get_auth(profile),
+                timeout=profile.get('grafana_timeout', 3),
+            )
         ret['result'] = True
         ret['comment'] = 'New data source {0} added'.format(name)
         ret['changes'] = data

grafana/server.sls

@@ -59,6 +59,9 @@ grafana_service:
   service.running:
   - name: {{ server.service }}
   - enable: true
+  # It is needed if client is trying to set datasource or dashboards before
+  # server is ready.
+  - init_delay: 5
   - watch:
     - file: /etc/grafana/grafana.ini