bug21209: java test: Read timed out

tests-added   : none
tests-run     : AGConnPoolClosingTest, AGConnPoolSessionTest
release-notes : none, test only

Tests failed on Hudson for not waiting long enough when machine is
under heavy load.
    AGConnPoolClosingTest: TIME_WAIT socket remained open
    AGConnPoolSessionTest: Read timed out
Fixed both tests by increasing wait times.

Change-Id: I1a5e5f86708e7708664d9ec5f7dd0fb1b8fa9e39
Reviewed-on: https://gerrit.franz.com:9080/2364
Reviewed-by: Ahmon Dancy <dancy@franz.com>
Reviewed-by: John O'Rourke <jor@franz.com>
Tested-by: Kevin Layer <layer@franz.com>