Increase time after add of gcc compilation.

tests/e2e_tests/test_beremiz.py

@@ -36,8 +36,8 @@ class BeremizTest(e2e.EndToEndTestCase):
     cls.supply(cls.runtime_release, cls.computer_id, state="available")
 
     # XXX: rather than sleep add check to wait for SRs compilation end
-    print("Sleep for 4h.")
-    time.sleep(4*3600)
+    print("Sleep for 6h.")
+    time.sleep(6*3600)
 
     print("Request beremiz-runtime and OSIE coupler instances.")
     # supply / request coupler