Fix ci error

[JingfeiPeng]

fixed ci tests on smarts side, still needs to figure out how to fix ci test on Ultra side

[JingfeiPeng]

To reproduce the failing CI test locally, create two venvs, one based on smarts ci and one based on Ultra's CI:

python3.7 -m venv .first
. .first/bin/activate
pip install --upgrade pip
pip install --upgrade wheel
pip install --upgrade -r requirements.txt
pip install --upgrade -e .[train,test]

then cd ultra and run pytest tests/test_train.py the test passes

Create venv according to Ultra's CI:

cd ultra
python3.7 -m venv .second
. .second/bin/activate
pip install --upgrade --upgrade-strategy eager pip
pip install --upgrade -e .

then run pytest tests/test_train.py we can reproduce the numpy import error

.ultra_venv/lib/python3.7/site-packages/smarts/core/utils/pybullet.py:27: in <module>
    from pybullet import *
E   ImportError: numpy.core.multiarray failed to import

[JenishPatel99]

@JingfeiPeng I have managed to suppress the ultra ci error by upgrading the numpy package. A stackexchange thread seemed to give a solution here is the link https://stackoverflow.com/questions/33859531/runtimeerror-module-compiled-against-api-version-a-but-this-version-of-numpy-is

[JingfeiPeng]

this would disable the tests right? We probably want to fix it instead of disabling it

[JenishPatel99]

Yes, sorry I forgot to enable those tests after just testing the ultra-ci by itself. I have restored the others tests as well

[Gamenot]

We should merge this into both develop and master.