CA-142238: Fix parsing lvmohba probe xml

With xs64bit, sr-probe has attributes like supported_speeds
which have comma separated values that break the exising parser.

This patch ensures that we don't break the required xml even if the
exception contains additional tags with comma separated values.

Signed-off-by: Siddharth Vinothkumar <siddharth.vinothkumar@citrix.com>