[MNG-6253] Replace CI friendly variables in pom.xml when installing/deploying

**[Christoph Amshoff](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=chamshoff)** opened **[MNG-6253](https://issues.apache.org/jira/browse/MNG-6253?redirect=false)** and commented

When using variables in pom.xml to get CI friendly version (https://maven.apache.org/maven-ci-friendly.html), these will not be replaced in installed or deployed pom files, which makes them unusable for other builds.

Karl Heinz Marbaise suggested to use the flatten-maven-plugin to do the property replacement
(http://blog.soebes.de/blog/2017/04/02/maven-pom-files-without-a-version-in-it/), and this was also suggested as a workaround in other tickets (MDEPLOY-223 got closed with "Not A Problem" solution).

That indeed works, but flatten-maven-plugin has to be manually configured in the base POM, and additionally it changes the pom files in many other areas which you would not want.

I honestly think that property replacement for the three allowed properties (`${revision}`, `${sha1}`, `${changelist}`) should be done by Maven internally without having the user configure other plugins. The feature is just not correctly working without, so closing such issues with "Not A Problem" is too little.

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**Affects:** 3.5.0

1 votes, 5 watchers