print status only if in bad shape

tests/test_raid.py

@@ -33,6 +33,9 @@ if os.path.isfile('/proc/mdstat'):
         print_green('Everything fine')
     else:
         print_red('Some array is in bad shape')
+        with open('/proc/mdstat', 'r') as f:
+            d = f.read()
+        print(d)
     sys.exit(not all_ok)
 else:
     print('No software RAID array found, untestable')