8321422: Test gc/g1/pinnedobjs/TestPinnedObjectTypes.java times out after completion

Reviewed-by: iwalulya, ayang

Author: Thomas Schatzl

test/hotspot/jtreg/gc/g1/pinnedobjs/TestPinnedObjectTypes.java

@@ -52,6 +52,7 @@ private static void testPinning(String type, boolean shouldSucceed) throws Excep
                                                                              "-XX:+UnlockDiagnosticVMOptions",
                                                                              "-XX:+WhiteBoxAPI",
                                                                              "-Xbootclasspath/a:.",
+                                                                             "-XX:-CreateCoredumpOnCrash",
                                                                              "-Xmx32M",
                                                                              "-Xmn16M",
                                                                              "-Xlog:gc",