RFR: 1383: Add core-libs label to jdk.random files

[Daniel Jeliński]

Currently no label is set on PRs touching jdk.random files. These PRs should be reviewed on core-libs mailing list.

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Commit messages:
 - Map jdk.random to core-libs

Changes: https://git.openjdk.java.net/skara/pull/1295/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=1295&range=00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-1383
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/skara/pull/1295.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1295/head:pull/1295

PR: https://git.openjdk.java.net/skara/pull/1295