Merge pull request ibmruntimes#600 from gin-nader/tom-fips-626-jdk17

Enable the z/OS platform for RestrictedSecurity mode

Author: keithc-ca

closed/src/java.base/share/classes/openj9/internal/security/RestrictedSecurity.java

@@ -107,7 +107,7 @@ public String[] run() {
                 });
         final List<String> nssSupportedArch = List.of("amd64", "ppc64le", "s390x");
         final List<String> openjceplusCertifiedArch = List.of("amd64", "ppc64", "s390x");
-        final List<String> openjceplusCertifiedOS = List.of("AIX", "Linux", "Windows");
+        final List<String> openjceplusCertifiedOS = List.of("AIX", "Linux", "Windows", "z/OS");
         String osName = props[2];
         String osArch = props[3];