RFR(s): 8166285: Missing dependencies java.httpclient for tests from java/net pachage

[Sergei Kovalev]

Hello team,

Could you please review below fix for:

BugID: https://bugs.openjdk.java.net/browse/JDK-8166285
Webrev: http://cr.openjdk.java.net/~skovalev/8166285/webrev.00/

Issue: Several regression tests from java/net package failing on 
execution in case an option "--limi-modules java/base" provided.
Solution: add missed modules declaration in appropriate test header.
More details see in CR.

-- 
With best regards,
Sergei