Extend radical-analytics-check to EnTK sessions

[mturilli]

Executing radical-analytics-check against an EnTK session produces the following error:

cache read failed: Ran out of input
Traceback (most recent call last):
  File "/Users/mturilli/Virtualenvs/princeton-pa/lib/python3.7/site-packages/radical/analytics/session.py", line 280, in create
    session = pickle.loads(data)
EOFError: Ran out of input

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/mturilli/Virtualenvs/princeton-pa/bin/radical-analytics-check", line 64, in <module>
    session  = ra.Session.create(src, stype)
  File "/Users/mturilli/Virtualenvs/princeton-pa/lib/python3.7/site-packages/radical/analytics/session.py", line 293, in create
    session = Session(src, stype, sid, _entities, _init)
  File "/Users/mturilli/Virtualenvs/princeton-pa/lib/python3.7/site-packages/radical/analytics/session.py", line 122, in __init__
    = reu.get_session_profile    (sid=sid, src=self._src)
  File "/Users/mturilli/Virtualenvs/princeton-pa/lib/python3.7/site-packages/radical/entk/utils/prof_utils.py", line 74, in get_session_profile
    raise EnTKError('No profiles found at %s' % src)
radical.entk.exceptions.EnTKError: No profiles found at re.session.login1.hrlee.018429.0030