reordering kvm installation

docs/en-US/hypervisor-host-install-firewall.xml

@@ -56,4 +56,5 @@
         <programlisting language="Bash">ufw allow proto tcp from any to any port 49152:492160</programlisting>
         <note><para>By default UFW is not enabled on Ubuntu. Executing these commands with the firewall disabled does not enable the firewall.</para></note>
     </section>
+    <para>The host is now ready to be added to a cluster. This is covered in a later section, see <xref linkend="host-add" />. It is recommended that you continue to read the documentation before adding the host!</para>
 </section>

docs/en-US/hypervisor-host-install-libvirt.xml

@@ -24,15 +24,8 @@
 
 <section id="hypervisor-host-install-libvirt">
     <title>Install and Configure libvirt</title>
-    <para>&PRODUCT; uses libvirt for managing virtual machines. Therefore it is vital that libvirt is configured correctly.</para>
+    <para>&PRODUCT; uses libvirt for managing virtual machines. Therefore it is vital that libvirt is configured correctly. Libvirt is a dependency of cloud-agent and should already be installed.</para>
     <orderedlist>
-        <listitem>
-            <para>Install libvirt</para>
-            <para>On RHEL or CentOS:</para>
-            <programlisting language="Bash">yum install libvirt</programlisting>
-            <para>On Ubuntu:</para>
-            <programlisting language="Bash">apt-get install libvirt-bin</programlisting>
-        </listitem>
         <listitem>
             <para>In order to have live migration working libvirt has to listen for unsecured TCP connections. We also need to turn off libvirts attempt to use Multicast DNS advertising. Both of these settings are in <filename>/etc/libvirt/libvirtd.conf</filename></para>
             <para>Set the following paramaters:</para>