re-assign the numpy version in requirements

vera121 · web-flow · commit af6fd9220f8e · 2019-01-15T22:32:18.000+08:00
to avoid the build failure on jenkins
diff --git a/python/requirements.txt b/python/requirements.txt
@@ -1,5 +1,5 @@
 Cython>=0.19.2
-numpy>=1.7.1
+numpy==1.15.4
 scipy>=0.13.2
 scikit-image>=0.9.3
 matplotlib>=1.3.1
