RFR: JDK-8061729 : Update java/net tests to eliminate dependency on sun.net.www.MessageHeader and some other internal APIs

[Mahendra Chhipa]

…t.www.MessageHeader and some other internal APIs

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Commit messages:
 - JDK-8061729 : Update java/net tests to eliminate dependency on sun.net.www.MessageHeader and some other internal APIs

Changes: https://git.openjdk.java.net/jdk/pull/5937/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5937&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8061729
  Stats: 167 lines in 10 files changed: 111 ins; 15 del; 41 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5937.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5937/head:pull/5937

PR: https://git.openjdk.java.net/jdk/pull/5937