Set timeout before connect to adb in jdwp.

Sometimes adb is in buggy status and just doesn't accept our
connection. Add a timeout in art side to make sure we aren't
stuck there.

Bug: 34140694
Test: mma -j40 test-art-host
Test: ./art/tools/run-jdwp-tests.sh --mode=host --variant=X64
Change-Id: Ia7756d5c03b57e87fe9642b0d32728aa6cead65c
Signed-off-by: Tao Wu <lepton@google.com>