[jdk11u-dev] RFR: 8257722: Improve "keytool -printcert -jarfile" output

[Goetz Lindenmaier]

I backport this for parity with 11.0.18-oracle.

src/java.base/share/classes/sun/security/tools/keytool/Main.java
had to be resolved:
In 11, x.getSubjectDN() is printed to 'out'. In the original
change and in 17, x.getSubjectX500Principal() is printed in this
place.
This is because "8241003: Deprecate "denigrated" java.security.cert APIs that represent DNs as Principal or String objects" is not in 11.

I also had to resolve 
src/java.base/share/classes/sun/security/tools/keytool/Resources.java
due to context.

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Commit messages:
 - Backport de93b1d0e83a9428dae4a9609996fe7b7e9b4932

Changes: https://git.openjdk.org/jdk11u-dev/pull/1495/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1495&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8257722
  Stats: 253 lines in 4 files changed: 166 ins; 84 del; 3 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1495.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1495/head:pull/1495

PR: https://git.openjdk.org/jdk11u-dev/pull/1495