don't source openrc

There is actually no reason why we need openrc for these tests, don't
source it as it prevents some ip math errors from randomly killing
tests.

Change-Id: Iface7c21898d92e14e840379938b25844cd85565
diff --git a/tests/test_functions.sh b/tests/test_functions.sh
index a7914f7..f8e2c9e 100755
--- a/tests/test_functions.sh
+++ b/tests/test_functions.sh
@@ -7,9 +7,6 @@
 # Import common functions
 source $TOP/functions
 
-# Import configuration
-source $TOP/openrc
-
 source $TOP/tests/unittest.sh
 
 echo "Testing die_if_not_set()"