Add dh-apparmor as build-deps

These apparmor profiles that shipped in this package used to load by
dpkg trigger which took too long as it reload all available profiles.

We are trying to minimize the the load time and also avoid
work-in-progress profile to be loaded when a developer is editing the
profile on the filesystem.

So that we need to call dh_apparmor in debian/rules to generate
apparmor profile reload script for each profile that ship in the
package.

Signed-off-by: Andrew Lee (李健秋) <andrew.lee@collabora.co.uk>

debian/control

@@ -6,6 +6,7 @@ Build-Depends:
  autoconf-archive,
  autotools-dev,
  debhelper (>= 9),
+ dh-apparmor,
  dh-autoreconf,
  dh-systemd,
  gobject-introspection,