Set EXAMPLE_EXTERNAL_NETWORK_NAME to be used in examples

Instead of using E2E_EXTERNAL_NETWORK_NAME
The gate failed because the there was no permission to create a port on that network

Author: itzikb-redhat

examples/local-config/external-network-filter.yaml.example

@@ -6,4 +6,4 @@ metadata:
 spec:
   import:
     filter:
-      name: ${E2E_EXTERNAL_NETWORK_NAME}
+      name: ${EXAMPLE_EXTERNAL_NETWORK_NAME}

hack/run_examples.sh

@@ -9,7 +9,9 @@ source ./hack/init_test_env.sh
 
 export OS_CLOUD=${E2E_OPENSTACK_CLOUD_NAME}
 
-export E2E_EXTERNAL_NETWORK_NAME
+# External network to be used in the examples
+# NOTE: we should rely on E2E_EXTERNAL_NETWORK_NAME instead
+export EXAMPLE_EXTERNAL_NETWORK_NAME=${EXAMPLE_EXTERNAL_NETWORK_NAME:-private}
 
 cd ./examples