Cleanup Issue when tearing down the cluster

[srivickynesh]

Description of problem:
_ ERROR at teardown of TestAddIdenticalBrick_cplex_distributed_glusterfs.test_add_identical_brick _

cls = <class 'functional.glusterd.test_add_identical_brick_new_node.TestAddIdenticalBrick_cplex_distributed_glusterfs'>

@classmethod
def doClassCleanups(cls):
    if (GlusterBaseClass.error_or_failure_exists or
               cls._is_error_or_failure_exists()):

E TypeError: _is_error_or_failure_exists() missing 1 required positional argument: 'self'

cls = <class 'functional.glusterd.test_add_identical_brick_new_node.TestAddIdenticalBrick_cplex_distributed_glusterfs'>

/root/toolbox/venv/gpy3/lib/python3.8/site-packages/glustolibs_gluster-0.22-py3.8.egg/glustolibs/gluster/gluster_base_class.py:1098: TypeError

Library needs fix:
doCleanups
doClassCleanups

How reproducible:
Everytime