SCHEMA-166. Strip more from KijiClientTest.

 - Adds an interface similar to AbstractKijiIntegrationTest.

Signed-off-by: Lee Sheng <lsheng@wibidata.com>
SCHEMA-165. yesNoPrompt in BaseTool should be supplied a question.

Every tool that uses the yesNoPrompt needs to grab the printStream
and print a question. yesNoPrompt should do that by default.

Signed-off-by: Christophe Taton <taton@wibidata.com>