anaconda logvol --percent doesn't work as expected/stated in documentation.

Issue

• According to the documentation the logvol --percent option is a percentage of free space; however, install is getting following error.

  Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/blivet/devices.py", line 2636, in _setSize raise ValueError("not enough free space in volume group")
  File "/usr/lib/python2.7/site-packages/blivet/partitioning.py", line 2043, in apply_chunk_growth req.device.size = size
  File "/usr/lib/python2.7/site-packages/blivet/partitioning.py", line 2048, in growLVM apply_chunk_growth(chunk)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/kickstart.py", line 706, in execute growLVM(storage)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/kickstart.py", line 1784, in doKickstartStorage ksdata.logvol.execute(storage, ksdata, instClass)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/tui/spokes/storage.py", line 349, in execute doKickstartStorage(self.storage, self.data, self.instclass)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/tui/hubs/summary.py", line 53, in setup spoke.execute()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/ui/tui/__init__.py", line 169, in setup obj.setup(self.ENVIRONMENT)
  File "/sbin/anaconda", line 1134, in <module> anaconda._intf.setup(ksdata)
  ValueError: not enough free space in volume group
  

• Why can --size and --percent no longer be specified for the same logvol in kickstart.

  The following problem occurred on line 51 of the kickstart file:
  --size and --percent cannot both be specified for the same logvol