[UIMA-6293] Migrate UIMA Parent POM to GitHub

- Copy branch to new location

git-svn-id: https://svn.apache.org/repos/asf/uima/build/parent-pom/branches/UIMA-6185-Upgrade-parent-POM-plugins@1883111 13f79535-47bb-0310-9956-ffa450edef68