Update merlin-core to v0.1.1 (instead of main branch) (#1419)

* Update `merlin-core` to `v0.1.0` (instead of `main` branch)

* Install `merlin-core` from PyPI in CI builds

* Don't use cache dir when installing `merlin-core`

* Bump `merlin-core` version to v0.1.1

Author: karlhigley

ci/build_and_test.sh

@@ -9,7 +9,7 @@ cd $nvt_directory
 echo "Installing NVTabular"
 python -m pip install --user --upgrade pip setuptools wheel pybind11 numpy==1.20.3 setuptools==59.4.0
 python -m pip uninstall nvtabular -y
-python -m pip install --user --upgrade merlin-core@git+https://github.com/NVIDIA-Merlin/core.git
+python -m pip install --user --upgrade --no-cache-dir merlin-core
 python setup.py develop --user --no-deps
 
 # following checks requirement requirements-dev.txt to be installed

requirements.txt

@@ -7,5 +7,4 @@ pyarrow>=1.0
 tensorflow-metadata>=1.2.0
 protobuf>=3.0.0
 packaging
-merlin-core@git+https://github.com/NVIDIA-Merlin/core.git
-
+merlin-core==0.1.1