[jdk11u-dev] RFR: 8246387: switch to jtreg 5.1

[Aleksey Shipilev]

This is a compound backport that brings the entire 11u to 5.1 b1. There are many dependencies thorough the repository history, so I opted to squash them together. It seems the 11.0.13-oracle backport exists only for this issue, which indicates Oracle maintainers did the same. 

The current list of included patches is:


8246387: switch to jtreg 5.1
8238943: switch to jtreg 5.0
8235866: bump jtreg requiredVersion to 4.2b16
8219552: bump jtreg requiredVersion to b14 in test/jdk/sanity/client/
8219417: bump jtreg requiredVersion to b14
8236111: narrow allowSmartActionArgs disabling


Tested on Linux x86_64 fastdebug with jtreg5.1-b1 and the following test suites:
 - tier1
 - tier2
 - tier3
 - vmTestbase_nsk_jvmti
 - vmTestbase_vm_metaspace
 - vmTestbase_vm_defmeth
 - vmTestbase_vm_mlvm
 - vmTestbase_vm_compiler
 - vmTestbase_nsk_jvmti
 - vmTestbase_vm_metaspace
 - sanity/client

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

Commit messages:
 - Backport e47b2bc8c338a0b137106074952cded1067fc50a

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/103/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=103&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8246387
  Stats: 186 lines in 24 files changed: 49 ins; 118 del; 19 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/103.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/103/head:pull/103

PR: https://git.openjdk.java.net/jdk11u-dev/pull/103