[MSITE-1008] Upgrade to Parent 42 and Maven 3.6.3

[michael-o]

This closes #187

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[slawekjaranowski]

There is:

<parent>
 <groupId>org.apache.maven</groupId>
 <artifactId>maven-parent</artifactId>
 <version>39</version>
</parent>

In: src/it/projects/full-reporting/pom.xml and test fails

[slawekjaranowski]

Please also fix in Jenkinsfile Maven versions

[michael-o]

@slawekjaranowski Good catches!

[michael-o]

Will take care of the failure...