PyJobTransforms: Protection for missing distro package

Add a protection for the missing distro package in the AthSimulation,aarch64 build until the package is available in the LCG100arm and/or LCG101arm externals.

Tagging @emoyse and @akraszna for info.

Tools/PyJobTransforms/python/trfReports.py

@@ -14,9 +14,12 @@ import pickle as pickle
 import json
 import os.path
 import platform
-import distro
 import pprint
 import sys
+try:
+    import distro
+except ImportError:
+    pass
 
 from xml.etree import ElementTree
 
@@ -590,7 +593,7 @@ class machineReport(object):
         for attr in attrs:
             try:
                 machine[attr] = getattr(distro, attr).__call__()
-            except AttributeError as e:
+            except (AttributeError,NameError) as e:
                 msg.warning('Failed to get "{0}" attribute from platform module: {1}'.format(attr, e))
 
         # Now try to get processor information from /proc/cpuinfo