Support multi-word cpusets

From cpuset(7):

> For masks longer than one word, a comma separator is used between
> words. Words are displayed in big-endian order, which has the most
> significant bit first. The hex digits within a word are also in
> big-endian order.

Author: stefanor

tests/ansible/tests/affinity_test.py

@@ -179,7 +179,8 @@ def _get_cpus(self, path='/proc/self/status'):
         try:
             for line in fp:
                 if line.startswith('Cpus_allowed'):
-                    return int(line.split()[1], 16)
+                    mask = line.split()[1].replace(',', '')
+                    return int(mask, 16)
         finally:
             fp.close()