Added hyperband support for hyperparameter tuning

.gitlab-ci.yml

@@ -3,16 +3,12 @@ stages:
 
 test:
   stage: test
-  variables:
-    CI: ""
   image: continuumio/anaconda3
   script:
     - python -V
-    - pip install pipenv
     - pip install coverage
-    - pipenv shell
-    - pipenv install --dev
-    - pipenv install -e deepof/
+    - pip install -r ./requirements.txt
+    - pip install -e deepof/
     - coverage run --source deepof -m pytest
     - coverage report -m --include deepof/utils.py,deepof/preprocess.py,deepof/model_utils.py,deepof/pose_utils.py,deepof/visuals.py,deepof/models.py,deepof/hypermodels.py,deepof/train_utils.py
     - coverage xml -o deepof_cov.xml