Reduce the number of RPCs in TestMultiplePutsGetsSequentially
Reduce the number of RPCs in TestMultiplePutsGetsSequentially

This makes the test run in about 4-5sec instead of 40+sec.

Change-Id: Ie09470cbfe1f33ddabcc30d6688e4ad77435df44

dougklein/gohbase,dougklein/gohbase,henrylee2cn/gohbase,tempbottle/gohbase,tsuna/gohbase