Use setuptools entry points instead of a custom script

Should fix fboender#190 and related issues (e.g. the script will not work
correctly ansible-cmdb if it's been installed into a non-activated
virtualenv).

setup.py

@@ -42,18 +42,19 @@ def get_data_files(path, strip='', prefix=''):
     package_dir={'': 'src'},
     packages=find_packages('src'),
     include_package_data=True,
-    data_files=\
+    data_files=
         get_data_files(
             'src/ansiblecmdb/data',
             strip='src',
             prefix='lib'
-        ) +
-        [['lib/ansiblecmdb/', ['src/ansible-cmdb.py']]],
+        ),
     zip_safe=False,
     install_requires=['mako', 'pyyaml', 'ushlex', 'jsonxs'],
-    scripts=[
-        'src/ansible-cmdb',
-    ],
+    entry_points={
+        'console_scripts': [
+            'ansible-cmdb = ansiblecmdb.cli:main',
+        ],
+    },
 
     classifiers=[
         'Development Status :: 5 - Production/Stable',

src/ansible-cmdb.py → src/ansiblecmdb/cli.py

@@ -139,7 +139,7 @@ def parse_user_params(user_params):
         return {}
 
 
-if __name__ == "__main__":
+def main():
     log = get_logger()
     data_dir = get_data_dir()
     tpl_dir = os.path.join(data_dir, 'tpl')
@@ -243,3 +243,6 @@ def parse_user_params(user_params):
 """
         sys.stderr.write(debug_txt)
         sys.exit(1)
+
+if __name__ == "__main__":
+    main()