RFR: 8256507: Add a micro benchmark for JDK-8153005

[Weijun Wang]

This is a micro benchmark for various algorithm settings of PKCS keystores. Strong for new algorithms and weak for old ones. Different iteration counts are tried. The result should show that the current setting (strong10000) is more efficient than old setting (weak50000).

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Commit messages:
 - 8256507: Add a micro benchmark for JDK-8153005

Changes: https://git.openjdk.java.net/jdk/pull/1277/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1277&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8256507
  Stats: 199 lines in 1 file changed: 199 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1277.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1277/head:pull/1277

PR: https://git.openjdk.java.net/jdk/pull/1277