Update Java11 Spring Boot sample (GoogleCloudPlatform#1409)

* Update SpringBoot Sample

* Update licenses

* Fix test dependencies

* Fix linting

Author: averikitsch

appengine-java11/gaeinfo/src/main/appengine/app.yaml

@@ -1,3 +1,17 @@
+# Copyright 2019 Google LLC
+#
+# 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.
+
 runtime: java11
 instance_class: F2
 entrypoint: 'java -cp * com.example.appengine.demo.jettymain.Main gaeinfo.war'

appengine-java11/spanner/src/main/appengine/app.yaml

@@ -1,3 +1,17 @@
+# Copyright 2019 Google LLC
+#
+# 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.
+
 runtime: java11
 instance_class: F2
 entrypoint: 'java -cp * com.example.appengine.demo.jettymain.Main spanner.war'

appengine-java11/springboot-helloworld/.mvn/wrapper/maven-wrapper.properties

@@ -1,9 +1,6 @@
 # Spring Boot Application Google App Engine Standard with Java 11
 
-This sample shows how to deploy a Spring Boot application with an exploded fatjar
-to Google App Engine, using the `entrypoint` element in the [app.yaml](app.yaml)
-to start your application. The sample uses the `java` command is used to compile
-and execute the Java source code.
+This sample shows how to deploy a Spring Boot application to Google App Engine.
 
 ## Setup