SCHEMA-97. Changed instances of Kiji.open(...) to Kiji.Factory.open(...).

This is the counterpart change to SCHEMA-97 from kiji-schema.

Signed-off-by: Lee Sheng <lsheng@wibidata.com>
Adds some kiji-mapreduce and kiji-schema tests.

IntegrationTestJobHistoryKijiTable
TestWibiTableMapReduceJobInput
IntegrationTestColumnPaging
WibiRowFilterIntegrationTest
IntegrationTestRegexQualifierColumnFilter

Signed-off-by: Lee Sheng <lsheng@wibidata.com>