Dropping the support for python 3.8 but these are required to merge t…

…he PR as the PR build needs these files because it runs based on the master files. We will be deleting these files once the PR is merged.

Signed-off-by: Lokesh Rangineni <lokeshforjava@gmail.com>

environment-setup.md

@@ -0,0 +1,23 @@
+1. install anaconda, install docker
+2. create an environment for feast, selecting python 3.9. Activate the environment:
+```bash
+conda create --name feast python=3.9
+conda activate feast
+```
+3. install dependencies:
+```bash
+pip install pip-tools
+brew install mysql
+brew install xz protobuf openssl zlib
+pip install cryptography -U
+conda install protobuf
+conda install pymssql
+pip install -e ".[dev]"
+make install-protoc-dependencies PYTHON=3.9
+make install-python-ci-dependencies PYTHON=3.9
+```
+4. start the docker daemon
+5. run unit tests:
+```bash
+make test-python
+```