py_wheel.publish doesn't take tags and requires passing args

[alexeagle]

It's difficult to use py_wheel's publish target for a couple reasons:

• if you find deliverable targets using a bazel query for a certain tag, you don't find the publish executable because tags attribute isn't propagated
• args like the repository url have to be passed when you bazel run the target, and can't be baked into the py_wheel definition