Create an RDS parameter group

    CLI example to create an RDS parameter group::

        salt myminion boto_rds.create_parameter_group my-param-group mysql5.6 \
                "group description"

def create_parameter_group(name, db_parameter_group_family, description,
                           tags=None, region=None, key=None, keyid=None,
                           profile=None):
    '''
    Create an RDS parameter group

    CLI example to create an RDS parameter group::

        salt myminion boto_rds.create_parameter_group my-param-group mysql5.6 \
                "group description"
    '''
    res = __salt__['boto_rds.parameter_group_exists'](name, tags, region, key,
                                                      keyid, profile)
    if res.get('exists'):
        return {'exists': bool(res)}

    try:
        conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
        if not conn:
            return {'results': bool(conn)}

        taglist = _tag_doc(tags)
        rds = conn.create_db_parameter_group(DBParameterGroupName=name,
                                             DBParameterGroupFamily=db_parameter_group_family,
                                             Description=description,
                                             Tags=taglist)
        if not rds:
            return {'created': False, 'message':
                    'Failed to create RDS parameter group {0}'.format(name)}

        return {'exists': bool(rds), 'message':
                'Created RDS parameter group {0}'.format(name)}
    except ClientError as e:
        return {'error': __utils__['boto3.get_error'](e)}