Bug in module when several groups are specified

[jmuyal]

These seems to be a bug in the module when several groups are specified ex:
group: 044-Groups1, 044-Group2
The sudoers file created is missing a % in front of the 2nd group name. The line in the file looks like:
%044-Groups1, 044-Group2 ISR_DEV_HOSTS = (ISR_DEV_RUNAS) ISR_DEV_CMNDS

The line should be:
%044-Group1, **%**044Group2 ISR_DEV_HOSTS = (ISR_DEV_RUNAS) ISR_DEV_CMNDS