Fix template; add missing space at shells

Author: Phil Friderici

spec/fixtures/testing/freebsd.txt

@@ -7,4 +7,4 @@ networks:   files
 protocols:  files
 rpc:        files
 services:   compat
-shells:    files
+shells:     files

templates/nsswitch.conf.epp

@@ -52,5 +52,5 @@ automount:  <%= [*$::nsswitch::automount].join(" ") %>
 aliases:    <%= [*$::nsswitch::aliases].join(" ") %>
 <% } -%>
 <% if !$::nsswitch::shells.empty() { -%>
-shells:    <%= [*$::nsswitch::shells].join(" ") %>
+shells:     <%= [*$::nsswitch::shells].join(" ") %>
 <% } -%>