Merge pull request #221 from mayeut/python-update

Update from Python 3.4.8, 3.5.5, 3.6.5 to 3.4.9, 3.5.6, 3.6.6

Author: trishankatdatadog

docker/build_scripts/build_env.sh

@@ -1,7 +1,7 @@
 # source me
 
 PYTHON_DOWNLOAD_URL=https://www.python.org/ftp/python
-CPYTHON_VERSIONS="2.7.15 3.4.8 3.5.5 3.6.5 3.7.0"
+CPYTHON_VERSIONS="2.7.15 3.4.9 3.5.6 3.6.6 3.7.0"
 
 # openssl version to build, with expected sha256 hash of .tar.gz
 # archive.