Fix DRBD disconnect steps (#413)

bsc#1229715
jsc#DOCTEAM-1550

xml/ha_drbd.xml

@@ -1337,15 +1337,14 @@ resource r0-U {
     To resolve this situation, enter the following commands on the node which has
     data to be discarded:
    </para>
-<screen>&prompt.root;<command>drbdadm</command> secondary r0</screen>
-   <para>
-    If the state is in <literal>WFconnection</literal>, disconnect first:
-   </para>
-   <screen>&prompt.root;<command>drbdadm</command> disconnect r0</screen>
+<screen>&prompt.root;<command>drbdadm disconnect r0</command>
+&prompt.root;<command>drbdadm secondary r0</command>
+&prompt.root;<command>drbdadm connect --discard-my-data r0</command></screen>
    <para>
-    On the node which has the latest data enter the following:
+    On the node which has the latest data, enter the following commands:
    </para>
-<screen>&prompt.root;<command>drbdadm</command> connect  --discard-my-data r0</screen>
+<screen>&prompt.root;<command>drbdadm disconnect r0</command>
+&prompt.root;<command>drbdadm connect r0</command></screen>
    <para>
     That resolves the issue by overwriting one node's data with the peer's
     data, therefore getting a consistent view on both nodes.