HBASE-24007 Get `-PrunLargeTests` passing on JDK11 (#1351)
HBASE-24007 Get `-PrunLargeTests` passing on JDK11 (#1351)

Minor tweaks required to get passing runs of `-PrunLargeTests`.
* Minimum Hadoop version is 3.2.0 due to
  [HADOOP-12760](https://issues.apache.org/jira/browse/HADOOP-12760).
* JDK11 looks like it consumes more memory than JDK8, so failures due
  to OOME see more common here. Bumping heap allocated to surefire
  forks allows better pass rate.

Signed-off-by: Jan Hentschel <d578fdd300b8c938efb2f672d6088098989ff57c@ultratendency.com>
Apache9/hbase,ndimiduk/hbase,Apache9/hbase,Apache9/hbase,mahak/hbase,francisliu/hbase,francisliu/hbase,apurtell/hbase,francisliu/hbase,mahak/hbase,Apache9/hbase,apurtell/hbase,francisliu/hbase,apurtell/hbase,ndimiduk/hbase,apurtell/hbase,ndimiduk/hbase,francisliu/hbase,Apache9/hbase,mahak/hbase,mahak/hbase,ndimiduk/hbase,francisliu/hbase,mahak/hbase,francisliu/hbase,ndimiduk/hbase,mahak/hbase,Apache9/hbase,apurtell/hbase,francisliu/hbase,ndimiduk/hbase,apurtell/hbase,mahak/hbase,Apache9/hbase,mahak/hbase,apurtell/hbase,Apache9/hbase,mahak/hbase,ndimiduk/hbase,apurtell/hbase,Apache9/hbase,apurtell/hbase,francisliu/hbase,francisliu/hbase,ndimiduk/hbase,Apache9/hbase,ndimiduk/hbase,ndimiduk/hbase,apurtell/hbase,mahak/hbase