RFR: Ensure that spurious newlines added by the hosted provider does not give different metadata checksums

[Robin Westberg]

At least for GitLab, the body of a pull request can be amended server side with additional newlines. Ensure that this
does not affect the metadata calculation.

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Commit messages:
 - Ensure that spurious newlines added by the hosted provider does not give different metadata checksums

Changes: https://git.openjdk.java.net/skara/pull/857/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=857&range=00
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/skara/pull/857.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/857/head:pull/857

PR: https://git.openjdk.java.net/skara/pull/857