RFR(XXS): 8037957: [TEST_BUG] javax/management/mxbean/LeakTest.java misses MerlinMXBean & TigerMXBean in @run build tag

[Yekaterina Kantserova]

Hi,

Could I please have a review of this small fix.

bug: https://bugs.openjdk.java.net/browse/JDK-8037957
webrev: http://cr.openjdk.java.net/~ykantser/8037957/webrev.00

Thanks,
Katja