Reduce the number of dumps in 130-hprof.

To avoid timeouts.

Test: test-art-host with ART_TEST_TRACE=true.
Change-Id: I849007b94341f4851c11a8896889f9e2ce851a86
diff --git a/test/130-hprof/src/Main.java b/test/130-hprof/src/Main.java
index c04bb86..5899dd1 100644
--- a/test/130-hprof/src/Main.java
+++ b/test/130-hprof/src/Main.java
@@ -166,7 +166,7 @@
         }
         Allocator allocator;
         public void run() {
-            for (int i = 0; i < 10; ++i) {
+            for (int i = 0; i < 5; ++i) {
                 Main.sleep(1000L);
                 createDumpAndConv();
             }