RFR: 8368982: Test sun/security/tools/jarsigner/EC.java completed and timed out [v2]

[Mikhail Yankelevich]

> Increased a timeout from default 120. Each test runs 25 commands with 5 sec spent on each, so this made it likely that 120 would timeout. I think changing it to 300 would be a nice buffer.

Mikhail Yankelevich has updated the pull request incrementally with one additional commit since the last revision:

  copyright

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27695/files
  - new: https://git.openjdk.org/jdk/pull/27695/files/5fc712f1..150c1bec

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27695&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27695&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27695.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27695/head:pull/27695

PR: https://git.openjdk.org/jdk/pull/27695