Description of problem:
1. create an LV in the custom spoke
2. click on Modify for the VG
3. change the VG name
4. return from the dialog

Version-Release number of selected component:
anaconda-21.22-1

The following was filed automatically by anaconda:
anaconda 21.22-1 exception report
Traceback (most recent call first):
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/gui/spokes/custom.py", line 2495, in on_modify_container_clicked
    freeSpace = self._device_container_name.getattr(c, "freeSpace", None)
AttributeError: 'str' object has no attribute 'getattr'

Additional info:
cmdline:        /usr/bin/python  /sbin/anaconda
cmdline_file:   method=http://192.168.1.6/data/install/rawhide/os/
executable:     /sbin/anaconda
hashmarkername: anaconda
kernel:         3.14.0-0.rc2.git4.1.fc21.x86_64
product:        Fedora
release:        Cannot get release name.
type:           anaconda
version:        rawhide