chore: prevent empty lines

- prevent empty lines when user features are not enabled
- change epp to erb template for user objects

modules/glauth/templates/obj/user.erb

@@ -0,0 +1,26 @@
+[[users]]
+  name = "<%= @user_name %>"
+<% if @givenname != '' -%>
+  givenname = "<%= @givenname %>"
+<% end -%>
+<% if @sn != '' -%>
+  sn = "<%= @sn %>"
+<% end -%>
+  mail = "<%= @mail %>"
+  uidnumber = <%= @uidnumber %>
+  primarygroup = <%= @primarygroup %>
+<% if @loginshell != '' -%>
+  loginShell = "<%= @loginshell %>"
+<% end -%>
+<% if @homedir != '' -%>
+  homeDir = "<%= @homedir %>"
+<% end -%>
+  passsha256 = "<%= @passsha256 %>"
+<% if @sshkeys.length > 0 -%>
+  sshkeys = [<%= @sshkeys.map { |key| "\"#{key}\"" }.join(', ') %>]
+<% end -%>
+<% if @passappsha256.length > 0 -%>
+  passappsha256 = [<%= @passappsha256.map { |pass| "\"#{pass}\"" }.join(', ') %>]
+<% end -%>
+  othergroups = <%= @formatted_othergroups %>
+