Update to newest bundler.
Update to newest bundler.

For some reason, bundler 1.1 and 1.0 consider CPK 5.0.10 to be
compatible with AR 3.1 and lower, even though CPK's gemspec indicates
it only works with AR => 3.2.9. These bundler versions did not have a
similar problem with CPK 5.0.9 which had a similar gemspec (though
for 3.2.8). Locally, bundler 1.2.2 does not have this problem.

NUBIC/schema_qualified_tables,NUBIC/schema_qualified_tables