Fixes for building on v4.0

Signed-off-by: Mike Marchetti <mmarchetti@sandvine.com>
Change-Id: I3f24280ee0cc745a512e8879990f2dfa86d0feda
diff --git a/setup.py b/setup.py
index 4fa3273..c1d91ac 100755
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@
 ]
 
 setup(name=_name,
-      version_command=('git describe', 'pep440-git'),
+      version_command=('git describe --match v* --tags --long --dirty', 'pep440-git-full'),
       description = _description,
       long_description = open('README.rst').read(),
       author = _author,