TT#22072 Update packaging

- Bump debhelper compatibility version 10.
- Switch from Priority extra to optional.
- Update debian/.gitignore file.

Change-Id: I5985edfdf3eba07364ca7f9291f1c7f96a753b24

debian/.gitignore

@@ -1,6 +1,7 @@
+*.debhelper
 *.log
 *.substvars
-*.debhelper
+/.debhelper/
 /debhelper-build-stamp
 /files
 /ngcp-mediator/

debian/compat

@@ -1 +1 @@
-9
+10

debian/control

@@ -1,9 +1,9 @@
 Source: ngcp-mediator
 Section: utils
-Priority: extra
+Priority: optional
 Maintainer: Sipwise Development Team <support@sipwise.com>
 Build-Depends:
- debhelper (>= 9),
+ debhelper (>= 10),
  default-libmysqlclient-dev | libmysqlclient15-dev,
  libglib2.0-dev,
 Standards-Version: 3.9.8