Add open-pr.sh script (#143)

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

hack/scripts/open-pr.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Copyright AppsCode Inc. and Contributors
+#
+# Licensed under the AppsCode Community License 1.0.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://github.com/appscode/licenses/raw/1.0.0/AppsCode-Community-1.0.0.md
+#
+# 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.
+
+set -eou pipefail
+
+SCRIPT_ROOT=$(realpath $(dirname "${BASH_SOURCE[0]}")/../..)
+SCRIPT_NAME=$(basename "${BASH_SOURCE[0]}")
+pushd $SCRIPT_ROOT
+
+# http://redsymbol.net/articles/bash-exit-traps/
+function cleanup() {
+    popd
+}
+trap cleanup EXIT
+
+git add --all
+if git diff -s --exit-code HEAD; then
+    echo "CRDs are already up-to-date!"
+    exit 0
+fi
+
+pr_branch=${GITHUB_REPOSITORY}@${GITHUB_SHA:0:8}
+git checkout -b $pr_branch
+git commit -a -s -m "Update crds for $pr_branch"
+git push -u origin HEAD
+hub pull-request \
+    --labels automerge \
+    --message "Update crds for $pr_branch" \
+    --message "$(git show -s --format=%b)"