[code-reflection] Integrated: Missing import in TestMissingReflectAnnotation

[Gary Frost]

Test case had missing import. 

Also added tests to 'sanity' checks for whitespace + tab + copyright checking

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Commit messages:
 - Missing import in TestMissingReflectAnnotation

Changes: https://git.openjdk.org/babylon/pull/783/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=783&range=00
  Stats: 3 lines in 3 files changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/babylon/pull/783.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/783/head:pull/783

PR: https://git.openjdk.org/babylon/pull/783