Add patch generation scripts

Signed-off-by: jingxuanzhang <jingxuan.n.zhang@gmail.com>

utils/gen_patch_kar.sh

@@ -0,0 +1,55 @@
+##############################################################################
+# Copyright (c) 2020 OpenALTO. All rights reserved.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Eclipse Public License v1.0 which accompanies this distribution,
+# and is available at http://www.eclipse.org/legal/epl-v10.html
+##############################################################################
+#!/bin/bash
+
+cd $(dirname $0)/..
+PROJECT_ROOT=$(pwd)
+KAR_ROOT=$PROJECT_ROOT/alto-karaf/target/assembly
+ALTO_KAR_ROOT=$KAR_ROOT/system/org/opendaylight/alto
+
+generate_patch() {
+    TMP_DIR=$(mktemp -d)
+    TMP_PATCH_ROOT=$TMP_DIR/odl-alto-patch
+    cp -r $ALTO_KAR_ROOT $TMP_PATCH_ROOT/
+    cp $PROJECT_ROOT/utils/install_patch.sh $TMP_PATCH_ROOT/
+    pushd $TMP_DIR
+    zip -r odl-alto-patch odl-alto-patch
+    mkdir -p $1
+    echo "Putting patch archieve to $1"
+    mv odl-alto-patch.zip $1/
+    popd
+    rm -rf $TMP_DIR
+}
+
+usage() {
+    echo "Usage: $0 [option]"
+    echo ""
+    echo "Options:"
+    echo "    <dir>      directory to put the patch"
+    echo "    help       display help information"
+}
+
+if [ -z $1 ]; then
+    usage
+    exit 0
+fi
+
+case $1 in
+    help)
+        usage
+        ;;
+    *)
+        # Generate patch to directory
+        if [ -d $ALTO_KAR_ROOT ]; then
+            generate_patch $(realpath $1)
+        else
+            echo "$ALTO_KAR_ROOT not found"
+            echo "Please build alto-karaf first"
+            exit -1
+        fi
+esac

utils/install_patch.sh

@@ -0,0 +1,13 @@
+##############################################################################
+# Copyright (c) 2020 OpenALTO. All rights reserved.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Eclipse Public License v1.0 which accompanies this distribution,
+# and is available at http://www.eclipse.org/legal/epl-v10.html
+##############################################################################
+#!/bin/bash
+
+cd $(dirname $0)
+KARAF_ROOT=$1
+
+cp -r alto/* $KARAF_ROOT/system/org/opendaylight/alto/