MDEV-6284: Activate quilt patches again: test table expection needed

Buildbot tries to create database 'test' so we need to have these
Debian-only exceptions enabled and patch our own source at build time.

debian/control

@@ -7,6 +7,7 @@ Build-Depends: bison,
                cmake (>= 2.7),
                debhelper (>= 9),
                dh-apparmor,
+               dpatch,
                libaio-dev,
                libboost-dev,
                libjemalloc-dev (>= 3.0.0~) [linux-any],

debian/rules

@@ -168,6 +168,6 @@ get-orig-source:
 	uscan --force-download --verbose
 
 %:
-	dh $@ --parallel
+	dh $@ --parallel --with dpatch
 
 # vim: ts=8