make test: bump default test timeout to 10 minutes

Change-Id: I25d88966376d712ff61f29227a45880a59e8ecf2
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/test/run_tests.py b/test/run_tests.py
index 6d477d8..8b135dd 100644
--- a/test/run_tests.py
+++ b/test/run_tests.py
@@ -69,7 +69,7 @@
     except:
         verbose = 0
 
-    default_test_timeout = 120
+    default_test_timeout = 600  # 10 minutes
     try:
         test_timeout = int(os.getenv("TIMEOUT", default_test_timeout))
     except: