ixll: Disable key checking for admin:admin sessions

This is a shorthand for the common case when we're attaching to a
random Infix device during testing, so don't bother with key checking.

utils/ixll

@@ -57,6 +57,8 @@ while getopts "A" opt; do
 	A)
 	    LLSSH_USER=admin
 	    LLSSH_PASS=admin
+            LLSSH_OPTS="$LLSSH_OPTS -oStrictHostKeyChecking=no"
+            LLSSH_OPTS="$LLSSH_OPTS -oUserKnownHostsFile=/dev/null"
 	    ;;
     esac
 done