Return LVM version from lvm version

    CLI Example:

    .. code-block:: bash

        salt '*' lvm.version

def version():
    '''
    Return LVM version from lvm version

    CLI Example:

    .. code-block:: bash

        salt '*' lvm.version
    '''
    cmd = 'lvm version'
    out = __salt__['cmd.run'](cmd).splitlines()
    ret = out[0].split(': ')
    return ret[1].strip()