Merge branch 'darincomeau/ocn/fix-missing-ssh-index' into next (PR #5305

)

Add missing time level index to 'ssh' coupling field

This adds a time level index that was missing from an 'ssh' call. The
missing index results in the following warnings being printed to
ocn.log.* every timestep in certain configurations (GMPAS-*.*wISC*):
   WARNING: Error: Field ssh has more than one time level, but no
                   timeLevel argument given.
With this fix (h/t @xylar), those warning messages no longer appear.

Fixes #5287

[BFB]

components/mpas-ocean/driver/ocn_comp_mct.F

@@ -2630,7 +2630,7 @@ subroutine ocn_export_mct(o2x_o, errorCode)   !{{{
      call mpas_pool_get_dimension(forcingPool, 'index_avgSurfaceVelocityZonal', index_avgZonalSurfaceVelocity)
      call mpas_pool_get_dimension(forcingPool, 'index_avgSurfaceVelocityMeridional', index_avgMeridionalSurfaceVelocity)
 
-     call mpas_pool_get_array(statePool, 'ssh', ssh)
+     call mpas_pool_get_array(statePool, 'ssh', ssh, 1)
      call mpas_pool_get_array(statePool, 'layerThickness', layerThickness, 1)
 
      call mpas_pool_get_array(forcingPool, 'landIceMask', landIceMask)