profiles: add keep-hostname to profile.template

Put it together with the other `keep-` commands.

And move it to the allow section in libreoffice.profile.

Related commits:

* cc8b019b5 ("--keep-hostname part 1 (#7048)", 2026-02-03)
* fbc94070e ("adding keep-hostname to libreoffice.profile", 2026-02-11).

Relates to #7048.

etc/profile-a-l/libreoffice.profile

@@ -44,9 +44,10 @@ include whitelist-var-common.inc
 #ignore seccomp
 #ignore tracelog
 
+keep-hostname
+
 apparmor
 caps.drop all
-keep-hostname
 netfilter
 nodvd
 nogroups

etc/templates/profile.template

@@ -168,6 +168,7 @@ include globals.local
 ##keep-dev-shm
 ##keep-dev-tpm
 ##keep-fd all
+##keep-hostname
 ##keep-shell-rc
 ##keep-var-tmp
 ##writable-etc