Add optional attribute

Author: dustinswales

physics/GWD/cires_ugwp.F90

@@ -244,7 +244,7 @@ subroutine cires_ugwp_run(do_ugwp, me,  master, im,  levs, ntrac, dtp, kdt, lonr
     real(kind=kind_phys),    intent(in), dimension(:) :: rain
 
     integer,                 intent(in) :: ntke
-    real(kind=kind_phys),    intent(in), dimension(:,:) :: q_tke, dqdt_tke
+    real(kind=kind_phys),    intent(in), dimension(:,:), optional :: q_tke, dqdt_tke
 
     logical, intent(in) :: lprnt
     integer, intent(in) :: ipr

physics/GWD/cires_ugwp.meta

@@ -791,6 +791,7 @@
   type = real
   kind = kind_phys
   intent = in
+  optional = True
 [dqdt_tke]
   standard_name = process_split_cumulative_tendency_of_turbulent_kinetic_energy
   long_name = turbulent kinetic energy tendency due to model physics
@@ -799,6 +800,7 @@
   type = real
   kind = kind_phys
   intent = in
+  optional True
 [lprnt]
   standard_name = flag_print
   long_name = control flag for diagnostic print out