Description of problem:
Happens reliably when trying to do an encrypted install with current Fedora Rawhide nightlies. Every openQA test that does an encrypted install is hitting this.

Version-Release number of selected component:
anaconda-27.3-1

The following was filed automatically by anaconda:
anaconda 27.3-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python3.6/site-packages/pyanaconda/storage_utils.py", line 406, in <genexpr>
    and not d.format.hasKey)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/storage_utils.py", line 408, in verify_luks_devices_have_key
    for dev in devices:
  File "/usr/lib64/python3.6/site-packages/pyanaconda/storage_utils.py", line 598, in check
    check(storage, constraints, result.add_error, result.add_warning)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/kickstart.py", line 300, in execute
    report = storage_checker.check(storage)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/kickstart.py", line 2301, in doKickstartStorage
    ksdata.autopart.execute(storage, ksdata, instClass)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/ui/gui/spokes/storage.py", line 432, in _doExecute
    doKickstartStorage(self.storage, self.data, self.instclass)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/ui/gui/spokes/storage.py", line 455, in _doExecute
    raise e
  File "/usr/lib64/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/threads.py", line 251, in run
    threading.Thread.run(self, *args, **kwargs)
AttributeError: 'LUKS' object has no attribute 'hasKey'

Additional info:
addons:         com_redhat_docker, com_redhat_kdump
cmdline:        /usr/libexec/system-python  /sbin/anaconda
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         4.11.0-0.rc5.git1.1.fc27.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        rawhide