yandextank and yandextank.plugins are namespace packages from now on

setup.py

@@ -13,7 +13,8 @@ analytic tools for the results they produce.
     maintainer='Alexey Lavrenuke (load testing)',
     maintainer_email='direvius@yandex-team.ru',
     url='http://yandex.github.io/yandex-tank/',
-    packages=find_packages(exclude=["tests"]),
+    namespace_packages=["yandextank", "yandextank.plugins"],
+    packages=find_packages(exclude=["tests", "tmp", "docs", "data"]),
     install_requires=[
         'psutil>=1.2.1',
         'ipaddr',

yandextank/__init__.py

@@ -0,0 +1,7 @@
+# this is a namespace package
+try:
+    import pkg_resources
+    pkg_resources.declare_namespace(__name__)
+except ImportError:
+    import pkgutil
+    __path__ = pkgutil.extend_path(__path__, __name__)

yandextank/plugins/RCAssert/__init__.py

@@ -0,0 +1 @@
+from plugin import *

yandextank/plugins/ResourceCheck/__init__.py

@@ -0,0 +1 @@
+from plugin import *

yandextank/plugins/ShellExec/__init__.py

@@ -0,0 +1 @@
+from plugin import *

yandextank/plugins/__init__.py

@@ -1,3 +1,7 @@
-'''
-Package contains all original tank tool plugins
-'''
+# this is a namespace package
+try:
+    import pkg_resources
+    pkg_resources.declare_namespace(__name__)
+except ImportError:
+    import pkgutil
+    __path__ = pkgutil.extend_path(__path__, __name__)