Only revoke GRANT OPTION when user actually has it

doc update for stat module

fixed vpc provisioning / clarified group_id usage

When revoking privileges from a user, the GRANT OPTION is always
revoked, even if the user doesn't have it. If the user exists, this
doesn't give an error, but if the user doesn't exist, it does:

mysql> GRANT ALL ON test.* TO 'test'@'localhost';
Query OK, 0 rows affected (0.00 sec)

mysql> REVOKE GRANT OPTION ON test.* FROM 'test'@'localhost';
Query OK, 0 rows affected (0.00 sec)

mysql> REVOKE GRANT OPTION ON test.* FROM 'test'@'localhost';
Query OK, 0 rows affected (0.00 sec)

mysql> REVOKE ALL ON test.* FROM 'test'@'localhost';
Query OK, 0 rows affected (0.00 sec)

mysql> REVOKE GRANT OPTION ON test.* FROM 'test'@'localhost';
ERROR 1141 (42000): There is no such grant defined for user 'test' on
host 'localhost'

Additionally, in MySQL 5.6 this breaks replication because of
http://bugs.mysql.com/bug.php?id=68892.

Rather than revoking the GRANT OPTION and catching the error, check if
the user actually has it and only revoke it when he does.

Minor cleanup of YAML Syntax documentation

Fix prev feature commit, Do not require aptitude to use apt commands in the apt module, only needed when upgrading.

also rename plugin name in error message

use global to fail as its not in self

Signed-off-by: Brian Coca <briancoca+dev@gmail.com>

Enhance meta-docs on... contributing to docs.

svr4pkg doesn't work on Sol10

- Update FAQ entry to refer to docsite README and reduce redundancy.

- Add additional info to docsite README: Sphinx building, link to module
  documentation reference.

very minor fix to playbooks2 to fix a formatting error

Update gem

Added module for baking EC2 AMIs