Update presubmit e2e to use pod local ip (istio#551)

Automatic merge from submit-queue

Update presubmit e2e to use pod local ip

Quick fix to unblock every one. I'll create another fix to actually use the service like kuat mentionned.

```release-note
NONE
```

Former-commit-id: b301529

prow/e2e.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Copyright 2017 Istio Authors
+
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+
+#       http://www.apache.org/licenses/LICENSE-2.0
+
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
+#######################################
+# Presubmit script triggered by Prow. #
+#######################################
+
+# Exit immediately for non zero status
+set -e
+# Check unset variables
+set -u
+# Print commands
+set -x
+
+# Running out of external ips
+E2E_ARGS=(--use_local_cluster)
+
+if [ "${CI}" == 'bootstrap' ]; then
+  # bootsrap upload all artifacts in _artifacts to the log bucket.
+  ARTIFACTS_DIR="${GOPATH}/src/istio.io/istio/_artifacts"
+  LOG_HOST="stackdriver"
+  PROJ_ID="istio-testing"
+  E2E_ARGS+=(--test_logs_path="${ARTIFACTS_DIR}" --log_provider=${LOG_HOST} --project_id=${PROJ_ID})
+  # Use the provided pull head sha, from prow.
+fi
+
+echo 'Running Integration Tests'
+./tests/e2e.sh ${E2E_ARGS[@]} ${@}

prow/istio-presubmit.sh

@@ -26,19 +26,12 @@ set -u
 # Print commands
 set -x
 
-E2E_ARGS=()
-
 if [ "${CI}" == 'bootstrap' ]; then
   # Test harness will checkout code to directory $GOPATH/src/github.com/istio/istio
   # but we depend on being at path $GOPATH/src/istio.io/istio for imports
   ln -sf ${GOPATH}/src/github.com/istio ${GOPATH}/src/istio.io
   cd ${GOPATH}/src/istio.io/istio
 
-  # bootsrap upload all artifacts in _artifacts to the log bucket.
-  ARTIFACTS_DIR="${GOPATH}/src/istio.io/istio/_artifacts"
-  LOG_HOST="stackdriver"
-  PROJ_ID="istio-testing"
-  E2E_ARGS+=(--test_logs_path="${ARTIFACTS_DIR}" --log_provider=${LOG_HOST} --project_id=${PROJ_ID})
   # Use the provided pull head sha, from prow.
   GIT_SHA="${PULL_PULL_SHA}"
 else
@@ -56,4 +49,4 @@ echo 'Pushing Images'
 (cd devel/fortio && make authorize all TAG="${GIT_SHA}")
 
 echo 'Running Integration Tests'
-./tests/e2e.sh ${E2E_ARGS[@]}
+./prow/e2e.sh