debian/control: change maintainer to the Osmocom team / mailing list

Change-Id: I6b38640b57480c6950be491eeb3c5167be1c6aab
diff --git a/debian/control b/debian/control
index c1eb464..c737d8d 100644
--- a/debian/control
+++ b/debian/control
@@ -1,7 +1,7 @@
 Source: osmo-hlr
 Section: net
 Priority: optional
-Maintainer: Max Suraev <msuraev@sysmocom.de>
+Maintainer: Osmocom team <openbsc@lists.osmocom.org>
 Build-Depends: debhelper (>= 9),
                pkg-config,
                dh-autoreconf,