Import smdebug_rulesconfig from PyPI (#303)

- Remove `smdebug_rulesconfig` module from the `src/sagemaker` directory.
- Remove `pip install` from wheel in `tox.ini`.
- Install `smdebug-rulesconfig` in `setup.py`, pinned to version 0.1.2.

Author: ajaykarpur

setup.py

@@ -40,6 +40,7 @@ def read_version():
     "scipy>=0.19.0",
     "protobuf3-to-dict>=0.1.5",
     "requests>=2.20.0, <2.21",
+    "smdebug-rulesconfig==0.1.2",
 ]
 
 # Specific use case dependencies