[jdk11u-dev] RFR: 8179503: Java should support GET OCSP calls

[Alexey Pavlyutkin]

Hi, here is backport of [JDK-8179503](https://bugs.openjdk.org/browse/JDK-8179503) that adds support of GET OCSP calls. 

Original patch applied with the only change

**`src/java.base/share/classes/sun/security/provider/certpath/OCSP.java`**
- resolved baseline conflict related to revokation checking

Verification (amd64/20.04): newly added `test/jdk/java/security/cert/CertPathValidator/OCSP/GetAndPostTests.java`
Regression  (amd64/20.04): `jdk_security`

@TheRealMDoerr I raised this one instead of already reviewed https://github.com/openjdk/jdk11u-dev/pull/847. Please check it out

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Commit messages:
 - Backport f5ee356540d7aa4a7663c0d5d74f5fdb0726b426

Changes: https://git.openjdk.org/jdk11u-dev/pull/1917/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1917&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8179503
  Stats: 369 lines in 3 files changed: 316 ins; 38 del; 15 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1917.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/1917/head:pull/1917

PR: https://git.openjdk.org/jdk11u-dev/pull/1917