[code-reflection] Integrated: HAT remove trailing eol ws from pom.xml files

[Gary Frost]

Extended sanity check to include  pom.xml files which detected trailing eol ws in pom files

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Commit messages:
 - Removed trailing eol ws from pom.xml files
 - ModuleOp support for HAT CallGraph

Changes: https://git.openjdk.org/babylon/pull/520/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=520&range=00
  Stats: 274 lines in 15 files changed: 151 ins; 30 del; 93 mod
  Patch: https://git.openjdk.org/babylon/pull/520.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/520/head:pull/520

PR: https://git.openjdk.org/babylon/pull/520