BaseTools: Adjust the spaces around commas and colons

Based on "futurize -f lib2to3.fixes.fix_ws_comma"

Contributed-under: TianoCore Contribution Agreement 1.1
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>

BaseTools/Tests/TestTools.py

@@ -160,7 +160,7 @@ class BaseToolsTest(unittest.TestCase):
         if minlen is None: minlen = 1024
         if maxlen is None: maxlen = minlen
         return ''.join(
-            [chr(random.randint(0,255))
+            [chr(random.randint(0, 255))
              for x in xrange(random.randint(minlen, maxlen))
             ])