'Get the version of grubby that is installed on this machine
:return: tuple with (major, minor) grubby version'

def get_grubby_version(self):

    output = self.get_grubby_version_raw()
    if (output is None):
        self.log.warn('Could    not    run    grubby    to    fetch    its    version')
        return None
    match = re.match('(grubby    version)?(\\s)?(\\d+)\\.(\\d+)(.*)', output)
    if match:
        groups = match.groups()
        return (int(groups[2]), int(groups[3]))
    else:
        return None
