RFR: 8295952: Problemlist existing compiler/rtm tests also on x86

[zzambers]

Problemlist should be extended so that existing compiler/rtm entries include x86 (32-bit) intel builds as well, as these are also affected.

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Commit messages:
 - Problemlist rtm issues also on i586

Changes: https://git.openjdk.org/jdk/pull/10875/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10875&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295952
  Stats: 11 lines in 1 file changed: 0 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jdk/pull/10875.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10875/head:pull/10875

PR: https://git.openjdk.org/jdk/pull/10875