Addition of the release automation script

tools/release/do_release.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+ROOT=$(pwd)
+
+if [ "$OLD_VITESS_VERSION" == "" ]; then
+  echo "Set the env var OLD_VITESS_VERSION with the previous version of Vitess. This value will be used to prepare the upgrade endtoend tests."
+  exit 1
+fi
+
+if [ "$NEW_VITESS_VERSION" == "" ]; then
+  echo "Set the env var NEW_VITESS_VERSION with the newest version of Vitess"
+  exit 1
+fi
+
+if [ "$NEW_OPERATOR_VERSION" == "" ]; then
+  echo "Set the env var NEW_OPERATOR_VERSION with the new version of the operator."
+  exit 1
+fi
+
+if [ "$NEXT_OPERATOR_VERSION" == "" ]; then
+  echo "Set the env var NEXT_OPERATOR_VERSION with the next dev version version of the operator."
+  exit 1
+fi
+
+
+function updateVitessImages() {
+  old_vitess_version=$1
+  new_vitess_version=$2
+  new_operator_version=$3
+
+  operator_files=$(find -E $ROOT/test/endtoend/operator/* -name "*.yaml" | grep -v "101_initial_cluster.yaml")
+  sed -i.bak -E "s/vitess\/lite:(.*)/vitess\/lite:v$new_vitess_version/g" $operator_files
+  sed -i.bak -E "s/vitess\/vtadmin:(.*)/vitess\/vtadmin:v$new_vitess_version/g" $operator_files
+  sed -i.bak -E "s/vitess\/lite:(.*)/vitess\/lite:v$new_vitess_version\"/g" $ROOT/pkg/apis/planetscale/v2/defaults.go
+  sed -i.bak -E "s/vitess\/lite:(.*)/vitess\/lite:v$old_vitess_version/g" $ROOT/test/endtoend/operator/101_initial_cluster.yaml
+  sed -i.bak -E "s/planetscale\/vitess-operator:(.*)/planetscale\/vitess-operator:v$new_operator_version/g" $ROOT/test/endtoend/operator/operator.yaml
+
+  rm -f $(find -E $ROOT/test/endtoend/operator/ -name "*.yaml.bak") $ROOT/pkg/apis/planetscale/v2/defaults.go.bak $ROOT/test/endtoend/operator/operator.yaml.bak
+}
+
+function updateVersion() {
+  version=$1
+
+  sed -i.bak -E "s/Version = \"(.*)\"/Version = \"$version\"/g" $ROOT/version/version.go
+  rm -f $ROOT/version/version.go.bak
+}
+
+
+git_status_output=$(git status --porcelain)
+if [ "$git_status_output" == "" ]; then
+  	echo so much clean
+else
+    echo "cannot do release with dirty git state"
+    exit 1
+fi
+
+updateVersion $NEW_OPERATOR_VERSION
+updateVitessImages $OLD_VITESS_VERSION $NEW_VITESS_VERSION $NEW_OPERATOR_VERSION
+
+git add --all
+git commit -n -s -m "Release commit for $NEW_OPERATOR_VERSION"
+git tag -m Version\ $NEW_OPERATOR_VERSION v$NEW_OPERATOR_VERSION
+
+updateVersion $NEXT_OPERATOR_VERSION
+
+git add --all
+git commit -n -s -m "Back to dev mode"