Fix sklearn version (#1822)

* update sklean version

* updates

* updates

* updates

deployment/pypi/setup.py

@@ -62,7 +62,7 @@ setuptools.setup(
         'scipy',
         'coverage',
         'colorama',
-        'sklearn'
+        'scikit-learn==0.20'
     ],
     classifiers = [
         'Programming Language :: Python :: 3',

docs/requirements.txt

@@ -9,4 +9,4 @@ json_tricks
 numpy
 scipy
 coverage
-sklearn
+scikit-learn==0.20

setup.py

@@ -40,7 +40,7 @@ setup(
         'schema',
         'PythonWebHDFS',
         'colorama',
-        'sklearn'
+        'scikit-learn==0.20'
     ],
 
     entry_points = {

src/sdk/pynni/nni/metis_tuner/requirments.txt

-sklearn
+scikit-learn==0.20
\ No newline at end of file

src/sdk/pynni/requirements.txt

@@ -7,4 +7,4 @@ scipy
 hyperopt==0.1.2
 
 # metis tuner
-sklearn
+scikit-learn==0.20