Fix grafana username and password not being set

so despite having a grafana username and grafna password
setting in all.yml these values are never actually changed
in the config file for grafana. This adds that

Change-Id: I75fe6c3c34f51ab62482974af0c3b5da190e4c39

ansible/install/group_vars/all.yml

@@ -106,6 +106,7 @@ graphite_port: 80
 # Graphite prefix / Cloud name used both with graphite and grafana dashboards
 graphite_prefix: openstack
 # Graphite username and password for login on the dashboard
+# credential aren't created when you deploy graphite, use manage.py
 graphite_username: root
 graphite_password: calvin
 
@@ -114,6 +115,10 @@ graphite_password: calvin
 ########################################
 # Grafana Server IP Address/Port (Can be hosted on the Graphite server)
 # you must fill out grafana_host prior to playbook execution
+# If you are deploying grafana the username/password combination will be set
+# (if you're using the grafana-docker playbook this does not currently work,
+# it will deploy with admin/admin). If you're uploading dashboards be sure to
+# set the password here to whatever it actually is.
 grafana_host:
 grafana_port: 3000
 grafana_username: admin

ansible/install/roles/grafana/tasks/main.yml

@@ -21,7 +21,7 @@
 - name: Import grafana GPG Key
   rpm_key: key=https://grafanarel.s3.amazonaws.com/RPM-GPG-KEY-grafana
     state=present
-  become: true
+  become: True
 
 - name: Install grafana RPM
   yum: name={{ item }} state=present
@@ -29,7 +29,7 @@
   with_items:
     - grafana
 
-- name: Set grafana server port
+- name: Set grafana config values
   ini_file:
     dest=/etc/grafana/grafana.ini
     section={{item.section}}
@@ -42,6 +42,12 @@
     - section: auth.anonymous
       option: enabled
       value: true
+    - section: security
+      option: admin_user
+      value: "{{grafana_username}}"
+    - section: security
+      option: admin_password
+      value: "{{grafana_password}}"
   become: true
 
 ### begin firewall ###