[packaging] remove v prefix from version for package naming

setup.py

@@ -38,7 +38,7 @@ def get_git_version():
     except EnvironmentError:
         return None
     version = p.communicate()[0].rstrip()
-    version = version.replace('-', '+', 1).replace('-', '.')
+    version = version.replace('-', '+', 1).replace('-', '.').lstrip('v')
     if p.returncode != 0:
         return None
     return version