[jdk17] RFR: 8267100: [BACKOUT] JDK-8196415 Disable SHA-1 Signed JARs

[Sean Mullan]

Please review this fix to backout the change to Disable SHA-1 Signed JARs from JDK 17 due to a startup performance regression (see https://bugs.openjdk.java.net/browse/JDK-8266971). The plan is to now address the performance issue in JDK 18, which will also allow for more bake time.

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Commit messages:
 - [BACKOUT] JDK-8196415 Disable SHA-1 Signed JARs.

Changes: https://git.openjdk.java.net/jdk17/pull/100/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=100&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267100
  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/100.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/100/head:pull/100

PR: https://git.openjdk.java.net/jdk17/pull/100