The RHEL Preupgrade Assistant fails with RemovableMedia_check and hal_check errors

Issue

The Preupgrade Assistant from RHEL6 to RHEL7 fails with following messages:

Removable media in fstab: xccdf_preupg_rule_system_RemovableMedia_check
Obsoleting HAL (Hardware Abstraction Layer): xccdf_preupg_rule_system_hal_check

From the results.html is possible to see the following errors
xccdf_preupg_rule_system_RemovableMedia_check

Traceback (most recent call last):
  File "/root/preupgrade/RHEL6_7/system/RemovableMedia/check", line 24, in <module>
    check_rpm_to (check_rpm="",check_bin="lsblk")
  File "/usr/lib/python2.6/site-packages/preupg/script_api.py", line 526, in check_rpm_to
    lines = FileHelper.get_file_content(VALUE_EXECUTABLES, "rb", True)
  File "/usr/lib/python2.6/site-packages/preupg/utils.py", line 186, in get_file_content
    data = f.read() if not method else f.readlines()
  File "/usr/lib64/python2.6/codecs.py", line 679, in readlines
    return self.reader.readlines(sizehint)
  File "/usr/lib64/python2.6/codecs.py", line 588, in readlines
    data = self.read()
  File "/usr/lib64/python2.6/codecs.py", line 477, in read
    newchars, decodedbytes = self.decode(data, self.errors)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xa2 in position 132483621: invalid start byte

xccdf_preupg_rule_system_hal_check

Traceback (most recent call last):
  File "/root/preupgrade/RHEL6_7/system/hal/check", line 30, in <module>
    check_rpm_to (check_rpm="",check_bin="rpm")
  File "/usr/lib/python2.6/site-packages/preupg/script_api.py", line 526, in check_rpm_to
    lines = FileHelper.get_file_content(VALUE_EXECUTABLES, "rb", True)
  File "/usr/lib/python2.6/site-packages/preupg/utils.py", line 186, in get_file_content
    data = f.read() if not method else f.readlines()
  File "/usr/lib64/python2.6/codecs.py", line 679, in readlines
    return self.reader.readlines(sizehint)
  File "/usr/lib64/python2.6/codecs.py", line 588, in readlines
    data = self.read()
  File "/usr/lib64/python2.6/codecs.py", line 477, in read
    newchars, decodedbytes = self.decode(data, self.errors)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xa2 in position 132483621: invalid start byte