admin: Drop old ssh 1 keys

Motivation:

dCache fails to install on Ubuntu Xenial due to the short key length
of the SSH 1 keys generated in the post instal script.

Modification:

Since we no longer support SSH 1, the fix is to drop the keys.

Result:

Solved a problem with installing on Ubuntu Xenial. We now no longer generate
keys for the old SSH 1 admin interface in the post install script.

Target: trunk
Request: 2.16
Request: 2.15
Request: 2.14
Request: 2.13
Require-notes: yes
Require-book: no
Acked-by: Paul Millar <paul.millar@desy.de>

Reviewed at https://rb.dcache.org/r/9386/

(cherry picked from commit 78ee625)

packages/fhs/src/main/deb/postinst

@@ -36,20 +36,6 @@ Please fix this and reinstall this package." >&2
     # delegated proxies should not be accessible to anybody else
     chmod 700 /var/lib/dcache/credentials
 
-    # generate admin door server key
-    if [ ! -f /etc/dcache/admin/server_key ]; then
-        ssh-keygen -q -b 768 -t rsa1 -f /etc/dcache/admin/server_key -N ""
-        chmod 640 /etc/dcache/admin/server_key
-        chgrp dcache /etc/dcache/admin/server_key
-    fi
-
-    # generate admin door host key
-    if [ ! -f /etc/dcache/admin/host_key ]; then
-        ssh-keygen -q -b 1024 -t rsa1 -f /etc/dcache/admin/host_key -N ""
-        chmod 640 /etc/dcache/admin/host_key
-        chgrp dcache /etc/dcache/admin/host_key
-    fi
-
     # generate admin door ssh2 server key
     if [ ! -f /etc/dcache/admin/ssh_host_dsa_key ]; then
         ssh-keygen -q -t dsa -f /etc/dcache/admin/ssh_host_dsa_key -N ""

packages/fhs/src/main/rpm/dcache-server.spec

@@ -62,20 +62,6 @@ fi
 exit 0
 
 %post
-# generate admin door server key
-if [ ! -f /etc/dcache/admin/server_key ]; then
-    ssh-keygen -q -b 768 -t rsa1 -f /etc/dcache/admin/server_key -N ""
-    chmod 640 /etc/dcache/admin/server_key
-    chgrp dcache /etc/dcache/admin/server_key
-fi
-
-# generate admin door host key
-if [ ! -f /etc/dcache/admin/host_key ]; then
-    ssh-keygen -q -b 1024 -t rsa1 -f /etc/dcache/admin/host_key -N ""
-    chmod 640 /etc/dcache/admin/host_key
-    chgrp dcache /etc/dcache/admin/host_key
-fi
-
 # generate admin door ssh2 server key
 if [ ! -f /etc/dcache/admin/ssh_host_dsa_key ]; then
     ssh-keygen -q -t dsa -f /etc/dcache/admin/ssh_host_dsa_key -N ""