Modify legacy drivers so that they can be called by sct wrappers and define wrapper templates.

site_ansto/instrument/config/environment/keithley_m2700.sct

@@ -0,0 +1,12 @@
+# vim: ts=8 sts=2 sw=2 expandtab autoindent smartindent nocindent
+driver keithley_m2700 = {
+  protocol = std
+  sobj_priv_type = 'user float'
+  class = environment
+  simulation_group = environment_simulation
+  add_args = 'id datype tol'
+  make_args = 'id datype tol'
+  code mkDriver = {%%
+    mk_sct_keithley_2700 $sct_controller environment $name $tol $id $datype
+  %%}
+}