Fix setting of bl_mynn_tkebudget in GFS_typedefs.F90

[grantfirl]

@egrell found a bug related to setting the bl_mynn_tkebudget control variable in GFS_typedefs.F90. In particular, the bl_mynn_tkebudget variable is not read in via namelist nor set. This should only affect diagnostic output of the MYNN PBL scheme.

To fix, simply add a couple of lines:

1. Add the bl_mynn_tkebudget around line 3323.
2. Add Model%bl_mynn_tkebudget = bl_mynn_tkebudget around line 3873.

This bug affects both the SCM and FV3 versions of the GFS_typedefs.F90 file. Ideally, it should be fixed in both repositories simultaneously.

[dustinswales]

This issue has been addressed