End to end test runner (#281)

Build fission-bundle and fission cli. Install the fission-bundle using
the fission-all helm chart. Run all files matching test_*.sh from the
tests/ directory.

This change doesn't contain any real tests, just the build and test
runner scripts.

Skips the tests when there are no cluster credentials available.

test/build_and_test.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -euo pipefail
+
+if [ ! -f ${HOME}/.kube/config ]
+then
+    echo "Skipping end to end tests, no cluster credentials"
+    exit 0
+fi
+
+source $(dirname $0)/test_utils.sh
+
+IMAGE=gcr.io/fission-ci/fission-bundle
+TAG=test
+
+build_and_push_fission_bundle $IMAGE:$TAG
+
+build_fission_cli
+
+install_and_test $IMAGE $TAG