make test: use random seed

This fixes a constant setting of random seed forgotten from testing.

Change-Id: Ie3c4db8bb2b4b73ba33de1ffc02cb563391fd31c
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/test/framework.py b/test/framework.py
index fc6f550..e2b4d7b 100644
--- a/test/framework.py
+++ b/test/framework.py
@@ -319,7 +319,7 @@
         Remove shared memory files, start vpp and connect the vpp-api
         """
         gc.collect()  # run garbage collection first
-        random.seed(1)
+        random.seed()
         cls.logger = getLogger(cls.__name__)
         cls.tempdir = tempfile.mkdtemp(
             prefix='vpp-unittest-%s-' % cls.__name__)