ssh-client module install fix

commit 38164332e1 try to
disallow ssh-client install for without proper options.
But ssh-client will fail installation with --sshkey for
publickey mode

Fix it by refusing to install only when both --ctty and --sshkey
are not added in options.

Signed-off-by: Dave Young <dyoung@redhat.com>

modules.d/95ssh-client/module-setup.sh

@@ -50,8 +50,8 @@ inst_sshenv()
 }
 
 install() {
-    [[ ! $cttyhack = yes ]] && {
-        derror "ssh interactive mode needs option --ctty!"
+    [[ ! $cttyhack = yes && ! $sshkey ]] && {
+        derror "ssh-client needs option --ctty or --sshkey!"
         return 1
     }