builder, dib, get-kernel: document new -q/--quiet options

Provided as common options for all the OCaml-based tools.

builder/virt-builder.pod

@@ -451,6 +451,8 @@ directory.
 
 Print information about the template cache.  See L</CACHING>.
 
+=item B<-q>
+
 =item B<--quiet>
 
 Don't print ordinary progress messages.

dib/virt-dib.pod

@@ -290,6 +290,12 @@ to debug failures to run scripts.
 The default is to delete the output file if virt-dib fails (or,
 for example, some script that it runs fails).
 
+=item B<-q>
+
+=item B<--quiet>
+
+Don't print ordinary progress messages.
+
 =item B<--qemu-img-options> option[,option,...]
 
 Pass I<--qemu-img-options> option(s) to the L<qemu-img(1)> command

get-kernel/virt-get-kernel.pod

@@ -99,6 +99,12 @@ C<mydistro-vmlinuz-3.19.0-20-generic> when the prefix is C<mydistro>.
 
 See also I<--unversioned-names>.
 
+=item B<-q>
+
+=item B<--quiet>
+
+Don't print ordinary progress messages.
+
 =item B<--unversioned-names>
 
 This option affects the destination file name of extracted files.