[MNG-8084] add system properties to test

[hboutemy]

fixes ./${user.home} directory creation during tests execution

that is after running mvn clean test, I get

$ git status
On branch master
Your branch is up to date with 'origin/master'.

Untracked files:
  (use "git add <file>..." to include in what will be committed)
        maven-api-impl/${user.home}/