Added comments to distinguish between user accounts

Author: Solomon Gifford

defaults/main.yml

@@ -1,7 +1,11 @@
 ---
+# Set this to the user ansible is logging in as - should have root
+# or sudo access
 mysql_user_home: /root
 mysql_user_name: root
 mysql_user_password: root
+
+# The default root user installed by mysql - almost always root
 mysql_root_home: /root
 mysql_root_username: root
 mysql_root_password: root