Increase memory sampling to try and avoid flaky tests

Author: jbachorik

ddprof-test/src/test/java/com/datadoghq/profiler/jfr/ObjectSampleDumpSmokeTest.java

@@ -15,7 +15,7 @@ protected boolean isPlatformSupported() {
 
     @Override
     protected String getProfilerCommand() {
-        return "memory=1024:a";
+        return "memory=128:a";
     }
 
     @RetryingTest(5)

ddprof-test/src/test/java/com/datadoghq/profiler/memleak/GCGenerationsTest.java

@@ -20,7 +20,7 @@
 public class GCGenerationsTest extends AbstractProfilerTest {
     @Override
     protected String getProfilerCommand() {
-        return "generations=true,cstack=fp";
+        return "memory=128,generations=true,cstack=fp";
     }
 
     @Override