tune_ssshd.sh: add support for run with Admin name as arg

dc-client/tune_sssd.sh

 #!/bin/sh
 
+# Use: ./tune_sssd.sh [AdminUser] [REALM]
+
 fatal()
 {
     echo "$@" >&2
@@ -9,6 +11,12 @@ fatal()
 epm -q etckeeper || fatal "Install etckeeper for /etc/ before"
 [ -d /etc/.git ] || fatal "initialize /etc with etckeeper init"
 
+ADMIN=Administrator
+if [ -n "$1" ] ; then
+    ADMIN="$1"
+    shift
+fi
+
 # Get REALM (needed for sssd tuning only) from DNS
 REALM=$(host -t txt _kerberos | sed -e 's|.*"\(.*\)".*|\1|')
 if [ -z "$REALM" ] ; then
@@ -21,6 +29,7 @@ if [ -z "$REALM" ] ; then
 fi
 echo "Use REALM $REALM ..."
 
+
 case $(distr_info -d) in
     Ubuntu|Debian)
         # Ubuntu
@@ -131,7 +140,7 @@ fi
 
 # Вход в домен
 rm -fv /etc/krb5.keytab
-kinit Administrator || exit
+kinit $ADMIN || exit
 echo "Join to domain... "
 net ads join -k || exit
 kdestroy