[master] RFR: 8300735: [Lilliput] Adjust GHA and jcheck config [v3]

[Roman Kennke]

> I'd like to exclude not-yet-supported platforms that are failing in GHA (ppc64le, risc64, s390x). Also, we should remove a stale submit.yml.
> I would also like to adjust jcheck to require a JBS issue for each PR, as I have recently begun to do. This improves traceability and discoverability of Lilliput work in JBS.

Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:

  Remove unsupported x-compile includes

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Changes:
  - all: https://git.openjdk.org/lilliput/pull/65/files
  - new: https://git.openjdk.org/lilliput/pull/65/files/884c5fc5..21391524

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=lilliput&pr=65&range=02
 - incr: https://webrevs.openjdk.org/?repo=lilliput&pr=65&range=01-02

  Stats: 16 lines in 1 file changed: 0 ins; 16 del; 0 mod
  Patch: https://git.openjdk.org/lilliput/pull/65.diff
  Fetch: git fetch https://git.openjdk.org/lilliput pull/65/head:pull/65

PR: https://git.openjdk.org/lilliput/pull/65