docker-compose.yml - logging in to log into

removed batch-demo code again

demos/batch-demo project added

labs/32-simple-task/build.gradle - mariadb is used

demo uses same spring boot version as lab projects

maven wrapper and gradle wrapper for all projects

gradle wrapper and maven wrapper for all projects

07-spring-cloud-stream-apps - maven wrapper and gradle wrapper updated

Merge branch 'master' of https://github.com/platform-acceleration-lab/spring-cloud-dataflow-code

30-batch app updated

added a missing properties for create the table

change People to people table name

30-batch/batch/pom.xml - change version to 0.0.1-SNAPSHOT

30-batch/batch-solution/pom.xml - added mariadb dependency

change spring boot 2.0.3 to 2.0.6