RFR: 7904111: Feature Tests - Adding JavaTest GUI newly automated test scripts.

[Golla Yadav]

Adding below automated newly JavaTest GUI feature Test Scripts to the Jemmy regression suite and tested locally on three platforms(Linux,Mac OS(JDK 1.8) and  Windows ) and working fine.

1. ConfigEnvBrowser1.java
2. ConfigEnvBrowser2.java
3. ConfigEnvBrowser3.java

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Commit messages:
 - 7904111: Feature Tests - Adding JavaTest GUI newly automated test scripts.

Changes: https://git.openjdk.org/jtharness/pull/99/files
  Webrev: https://webrevs.openjdk.org/?repo=jtharness&pr=99&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7904111
  Stats: 263 lines in 3 files changed: 263 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jtharness/pull/99.diff
  Fetch: git fetch https://git.openjdk.org/jtharness.git pull/99/head:pull/99

PR: https://git.openjdk.org/jtharness/pull/99