RFR: JDK-8282354 : Remove dependancy of TestHttpServer, HttpTransaction, HttpCallback from open/test/jdk/ tests [v5]

[Mahendra Chhipa]

> Updated following remaining tests to remove depenedies of TestHttpServer, HttpTransaction, HttpCallback
> open/test/jdk/java/net/ProxySelector/LoopbackAddresses.java
> open/test/jdk/java/net/ProxySelector/ProxyTest.java
> open/test/jdk/java/net/URL/PerConnectionProxy.java
> open/test/jdk/java/net/URLConnection/B5052093.java
> open/test/jdk/sun/net/www/AuthHeaderTest.java
> open/test/jdk/sun/net/www/http/KeepAliveCache/B5045306.java

Mahendra Chhipa has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 11 additional commits since the last revision:

 - Removed extra space.
 - Removed Transfer encoding chunked from B5045306
 - Merge branch 'master' into JDK-8282354
 - Implemented the review comments.
 - Removed extra whitespace
 - Implemented the review comments.
 - JDK-8282354 : Remove dependancy of TestHttpServer, HttpTransaction, HttpCallback from open/test/jdk/ tests
 - Merge branch 'master' into JDK-8282354
 - WIP
 - Merge branch 'master' into httptrans
 - ... and 1 more: https://git.openjdk.java.net/jdk/compare/b46ce84b...7f947718

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7616/files
  - new: https://git.openjdk.java.net/jdk/pull/7616/files/f2218025..7f947718

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7616&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7616&range=03-04

  Stats: 18347 lines in 450 files changed: 12637 ins; 3117 del; 2593 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7616.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7616/head:pull/7616

PR: https://git.openjdk.java.net/jdk/pull/7616