Replaced "jks" with "pkcs12" in both the spec and fallback for `KeyStore.getDefaultType()`
------------- Commit messages: - removed jks as fallback keystore and replaced with pkcs12 Changes: https://git.openjdk.org/jdk/pull/15625/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15625&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8304956 Stats: 4 lines in 1 file changed: 0 ins; 1 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/15625.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15625/head:pull/15625 PR: https://git.openjdk.org/jdk/pull/15625
