Merge Allow dovecot to use all signals

similar to commit 2f9d172c
we discovered that there was a service outage
when dovecot tried to send a usr1 signal

type=AVC msg=audit(1648024138.249:184964): apparmor="DENIED" operation="signal" profile="dovecot" pid=1690 comm="dovecot" requested_mask="send" denied_mask="send" signal=usr1 peer="dovecot-imap-login"

MR: !865


Approved-by: Christian Boltz <apparmor@cboltz.de>
Merged-by: Christian Boltz <apparmor@cboltz.de>


(cherry picked from commit 83685ba7)

f0919f83 Allow dovecot to use all signals

profiles/apparmor.d/usr.sbin.dovecot

@@ -33,8 +33,8 @@ profile dovecot /usr/{bin,sbin}/dovecot flags=(attach_disconnected) {
   capability sys_chroot,
   capability sys_resource,
 
-  signal send set=(int,quit,term,kill) peer=/usr/lib/dovecot/*,
-  signal send set=(int,quit,term,kill) peer=dovecot-*,
+  signal send peer=/usr/lib/dovecot/*,
+  signal send peer=dovecot-*,
 
   unix (receive, send) type=stream peer=(label=/usr/lib/dovecot/anvil),
   unix (receive, send) type=stream peer=(label=dovecot-anvil),