fix: actually exclude test files from being installed (#1132)

Author: yan12125

setup.py

@@ -60,7 +60,7 @@ def read_requirements(req='base.txt'):
     url='https://github.com/awslabs/serverless-application-model',
     license='Apache License 2.0',
     # Exclude all but the code folders
-    packages=find_packages(exclude=('tests', 'docs', 'examples', 'versions')),
+    packages=find_packages(exclude=('tests*', 'docs', 'examples', 'versions')),
     install_requires=read_requirements('base.txt'),
     include_package_data=True,
     extras_require={