TT#20081 Switch to a native source package

Use source format 3.0 (native), and update the version to match. We do
not need to inflict ourselves with the pain caused by pristine-tar.

Change-Id: I9d3ae5ebe512eba4847f84aa78fb149a243ccddc
(cherry picked from commit e69a471c08)

debian/changelog

@@ -1,3 +1,10 @@
+ngcp-asterisk-voicemail (11.13.1+playback+0~mr5.5.0.0) unstable; urgency=medium
+
+  [ Guillem Jover ]
+  * TT#20081 Switch to a native source package.
+
+ -- Guillem Jover <gjover@sipwise.com>  Wed, 16 Aug 2017 18:29:54 +0200
+
 ngcp-asterisk-voicemail (11.13.1+playback-1+0~mr5.5.0.0) unstable; urgency=medium
 
   * New release.

debian/control

@@ -3,6 +3,7 @@ Priority: optional
 Section: comm
 Maintainer: Sipwise Development Team <support@sipwise.com>
 Build-Depends: asterisk-dev,
+               quilt,
                debhelper (>= 9~),
                libpcre3-dev,
                unixodbc-dev

debian/rules

@@ -5,4 +5,4 @@
 #export DH_VERBOSE=1
 
 %:
-	dh $@
+	dh $@ --with quilt

debian/source/format

@@ -1 +1 @@
-3.0 (quilt)
+3.0 (native)