debian: fix DistributionNotFound error when python-miniupnpc is not installed

debian/control

@@ -8,7 +8,7 @@ X-Python-Version: >= 2.7
 
 Package: re6stnet
 Architecture: all
-Depends: ${misc:Depends}, python (>= 2.7), python-pkg-resources, python-openssl (>= 0.13), openvpn (>= 2.3), babeld (= 1.6.2-nxd1), iproute2 | iproute, openssl
+Depends: ${misc:Depends}, ${python:Depends}, python-pkg-resources, python-openssl (>= 0.13), openvpn (>= 2.3), babeld (= 1.6.2-nxd1), iproute2 | iproute, openssl
 Recommends: ${python:Recommends}, logrotate
 Suggests: ndisc6
 Conflicts: re6st-node

debian/rules

@@ -14,7 +14,8 @@ build-package: debian/changelog
 include debian/common.mk
 
 override_dh_python2:
-	dh_python2 --no-guessing-deps --depends=pyOpenSSL --recommends=miniupnpc
+	sed -i /^miniupnpc$$/d `find $(TMP)/usr -name requires.txt`
+	dh_python2 --recommends=miniupnpc
 
 override_dh_auto_clean:
 	make clean