Description of problem:
In FIPS mode we are receiving UnboundLocalError

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. enable FIPS
2. yum install ipa-client
3. run ipa-client-install

Actual results:
# ipa-client-install

Traceback (most recent call last):
  File "/usr/sbin/ipa-client-install", line 43, in <module>
    import ipaclient.ntpconf
  File "/usr/lib/python2.7/site-packages/ipaclient/ntpconf.py", line 24, in <module>
    from ipaplatform.tasks import tasks
  File "/usr/lib/python2.7/site-packages/ipaplatform/tasks.py", line 24, in <module>
    from ipaplatform.redhat.tasks import RedHatTaskNamespace
  File "/usr/lib/python2.7/site-packages/ipaplatform/redhat/tasks.py", line 54, in <module>
    """)
  File "/usr/lib64/python2.7/site-packages/cffi/api.py", line 103, in cdef
    self._parser.parse(csource, override=override, packed=packed)
  File "/usr/lib64/python2.7/site-packages/cffi/cparser.py", line 166, in parse
    self._internal_parse(csource)
  File "/usr/lib64/python2.7/site-packages/cffi/cparser.py", line 172, in _internal_parse
    ast, macros, csource = self._parse(csource)
  File "/usr/lib64/python2.7/site-packages/cffi/cparser.py", line 127, in _parse
    ast = _get_parser().parse(csource)
  File "/usr/lib64/python2.7/site-packages/cffi/cparser.py", line 32, in _get_parser
    _parser_cache = pycparser.CParser()
  File "/usr/lib/python2.7/site-packages/pycparser/c_parser.py", line 111, in __init__
    outputdir=taboutputdir)
  File "/usr/lib/python2.7/site-packages/ply/yacc.py", line 3065, in yacc
    signature = pinfo.signature()
  File "/usr/lib/python2.7/site-packages/ply/yacc.py", line 2814, in signature
    return sig.digest()
UnboundLocalError: local variable 'sig' referenced before assignment

Local variables in innermost frame:
self: <ply.yacc.ParserReflect object at 0x26e3bd0>
md5: <built-in function openssl_md5>


Expected results:
No Fail

Additional info:

md5 is not supported in FIPS mode, it must be at least SHA256