Activiti: Upgrade to Spring Cloud Greenwich and SCK8s when released

[salaboy]

Spring Cloud Greenwich Final is about to be released so we should release RC1 with the final version of Greenwich

[salaboy]

https://github.com/spring-cloud/spring-cloud-release/milestone/63

[mteodori]

released: https://search.maven.org/artifact/org.springframework.cloud/spring-cloud-dependencies/Greenwich.RELEASE/pom

[ryandawsonuk]

For boot the places to upgrade
https://github.com/search?q=org%3AActiviti+%27spring-boot.version%27++in%3Afile+filename%3Apom.xml&type=Code
and
https://github.com/search?q=org%3AActiviti+%27spring-boot-starter-parent%27++in%3Afile+filename%3Apom.xml&type=Code

For cloud:
https://github.com/search?q=org%3AActiviti+%27spring-cloud.version%27++in%3Afile+filename%3Apom.xml&type=Code

And spring cloud k8s:
https://github.com/search?q=org%3AActiviti+%27spring-cloud-k8s%27++in%3Afile+filename%3Apom.xml&type=Code

I guess the idea is to go to Greenwich.RELEASE for cloud and latest release versions for spring-cloud-kubernetes (1.0.0.RELEASE) and boot (2.1.2.RELEASE)?

[salaboy]

initial work done.