Get current numeric timezone offset from UCT (i.e. -0700)

    CLI Example:

    .. code-block:: bash

        salt '*' timezone.get_offset

def get_offset():
    '''
    Get current numeric timezone offset from UCT (i.e. -0700)

    CLI Example:

    .. code-block:: bash

        salt '*' timezone.get_offset
    '''
    if 'AIX' not in __grains__['os_family']:
        return __salt__['cmd.run'](['date', '+%z'], python_shell=False)

    salt_path = '/opt/salt/bin/date'

    if not os.path.exists(salt_path):
        return 'date in salt binaries does not exist: {0}'.format(salt_path)

    return __salt__['cmd.run']([salt_path, '+%z'], python_shell=False)