(bugfix) Change MPIRUN from mpiexec to srun for ctest

[chan-hoo]

Description

• Change 'mpiexec' to 'srun' for Ctests to avoid unstable mpi runs.

Anticipated changes to regression tests:

• Is baseline change expected ?

Subcomponents involved:

• apply_incr.fd (NOAA-PSL/land-apply_jedi_incr)
• ufs_model.fd (ufs-community/ufs-weather-model)
• none

Linked PR's and Issues:

Resolve Issue #160

Testing (for CM's):

• RDHPCS
  • Hera
  • Orion
  • Hercules
• CI
  • Completed
• WE2E
  • Completed
• PW-Clouds
  • AWS
  • AZURE
  • GCP

[chan-hoo]

• Hera:

+ ctest
Test project /scratch2/NAGAPE/epic/Chan-hoo.Jeon/landda_test/land-DA_workflow/sorc/build
    Start 1: test_create_ens
1/4 Test #1: test_create_ens ..................   Passed    6.23 sec
    Start 2: test_letkfoi_snowda
2/4 Test #2: test_letkfoi_snowda ..............   Passed   27.85 sec
    Start 3: test_apply_jediincr
3/4 Test #3: test_apply_jediincr ..............   Passed    2.45 sec
    Start 4: test_ufs_datm_land
4/4 Test #4: test_ufs_datm_land ...............   Passed   47.17 sec

100% tests passed, 0 tests failed out of 4

Total Test time (real) =  83.73 sec

[chan-hoo]

• Orion:

+ ctest
Test project /work/noaa/epic/chjeon/landda_test/land-DA_workflow/sorc/build
    Start 1: test_create_ens
1/4 Test #1: test_create_ens ..................   Passed    3.86 sec
    Start 2: test_letkfoi_snowda
2/4 Test #2: test_letkfoi_snowda ..............   Passed    5.51 sec
    Start 3: test_apply_jediincr
3/4 Test #3: test_apply_jediincr ..............   Passed    2.28 sec
    Start 4: test_ufs_datm_land
4/4 Test #4: test_ufs_datm_land ...............   Passed   58.94 sec

100% tests passed, 0 tests failed out of 4

Total Test time (real) =  70.62 sec

[chan-hoo]

• Hercules:

+ ctest
Test project /work/noaa/epic/chjeon/landda_test_hercules/land-DA_workflow/sorc/build
    Start 1: test_create_ens
1/4 Test #1: test_create_ens ..................   Passed    1.86 sec
    Start 2: test_letkfoi_snowda
2/4 Test #2: test_letkfoi_snowda ..............   Passed    3.56 sec
    Start 3: test_apply_jediincr
3/4 Test #3: test_apply_jediincr ..............   Passed    1.79 sec
    Start 4: test_ufs_datm_land
4/4 Test #4: test_ufs_datm_land ...............   Passed   36.36 sec

100% tests passed, 0 tests failed out of 4

Total Test time (real) =  43.58 sec