[VOL-5545] Normalize package name to fix PyPI upload

Rename package from device-management-interface to
device_management_interface to comply with PEP 625 filename
normalization required by PyPI (version 1.18.1 upload failed with:
"Filename device-management-interface-1.18.1.tar.gz is invalid,
should be device_management_interface-1.18.1.tar.gz").

Change-Id: I11821c5420e2014ea39c0e57cdd42cd87c50a9ab
Signed-off-by: Serkant Uluderya <serkant.uluderya@netsia.com>
diff --git a/setup.py b/setup.py
index 3917687..ce1b195 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
 
 
 setup(
-    name='device-management-interface',
+    name='device_management_interface',
     version=version(),
     description='Protobuf interface definitions',
     author='VOLTHA project',