script: Fix failing build_xc job

script: Fix failing build_xc job

build_xc job uses compare_cc_results.py to compare cache
files, the cache files are stringified hash maps, the results
in python 3.4 don't compare well due to inconsistent order of
dict key/value pairs when the cache files are created. While
comparing the file contents works fine in python3.6 it fails
with python3.4. This patch detects problematic dict lines and
rewrites the value for comparison

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>