Merge lp:~arosales/charms/trusty/mysql/add-default-keys into lp:charms/trusty/mysql

[Antonio Rosales]

This MP is from Jorge's work from https://code.launchpad.net/~jorge/charms/trusty/mysql/fix-proof/+merge/234020

However in that MP the config.yaml had a tab instead of spaces which causes issues in the parsing of the yaml.

The ultimate goal of this MP is to set default values to satisfy proof.

This does deploy to at started state, thus the defaults look to not have a negative affect on the the deploy.

[Antonio Rosales (arosales)]

This also passes bundletester lint and proof:

/mysql$ bundletester
mysql
    charm-proof PASS
    make lint PASS

PASS: 2 Total: 2 (1.83715 sec)

=== modified file 'config.yaml'
--- config.yaml	2014-05-08 11:23:53 +0000
+++ config.yaml	2014-09-17 22:41:34 +0000
@@ -80,6 +80,7 @@
           your ceph cluster).
     source:
         type: string
+        default: 
         description: |
           Optional configuration to support use of additional sources such as:
           .
@@ -91,6 +92,7 @@
           option.
     key:
         type: string
+        default: 
         description: |
           Key ID to import to the apt keyring to support use with arbitary source
           configuration from outside of Launchpad archives or PPA's.