setup: do not include test files

Include only `tarantool` package and subpackage code on install. Before
this patch, test suites were installed as well.

Part of #238

Author: DifferentialOrange

Diff for: CHANGELOG.md

@@ -146,6 +146,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - Package build (#238).
+- Do not install test files (#238).
 
 ## 0.9.0 - 2022-06-20
 

Diff for: setup.py

@@ -67,10 +67,11 @@ def find_version(*file_paths):
         return version_match.group(2)
     raise RuntimeError("Unable to find version string.")
 
+packages = [item for item in find_packages('.') if item.startswith('tarantool')]
 
 setup(
     name="tarantool",
-    packages=find_packages("."),
+    packages=packages,
     package_dir={"tarantool": "tarantool"},
     include_package_data=True,
     version=find_version('tarantool', '__init__.py'),