Unable to capture MPI Functions when instrumenting fortran code

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I have instrumented a fortran code using Caliper but when I run the application it doesn't capture MPI communication.

I have built Caliper with the following configuration:

`cmake -DCMAKE_INSTALL_PREFIX=$HOME/local/caliper-gcc -DCMAKE_C_COMPILER=/csc/tinis/software/Core/GCCcore/7.3.0/bin/gcc -DCMAKE_CXX_COMPILER=/csc/tinis/software/Core/GCCcore/7.3.0/bin/g++ -DWITH_FORTRAN=On -DWITH_TOOLS=On -DWITH_MPI=On -DMPI_C_COMPILER=/csc/tinis/software/Compiler/GCC/7.3.0-2.30/OpenMPI/3.1.1/bin/mpicc -DCMAKE_Fortran_COMPILER=/csc/tinis/software/Core/GCCcore/7.3.0/bin/gfortran ..`

When I run my application I set the following in my script:
```
export CALI_SERVICES_ENABLE=trace,event,mpi,timestamp,recorder
export CALI_TIMER_SNAPSHOT_DURATION=true
export CALI_TIMER_INCLUSIVE_DURATION=true
export CALI_MPI_WHITELIST=all
export CALI_RECORDER_FILENAME="./caliper-$SLURM_JOB_ID/caliper-%mpi.rank%.cali"
```

In the caliper output files for the code I only have the instrumented areas of the code with the start and end routines:

call cali_begin_byname('sweep')
c CODE...
call cali_end_byname('sweep')

Any ideas whats going wrong?

Reproduce the report using the shown CMake configuration, Fortran annotations, and CALI_SERVICES_ENABLE and CALI_MPI_WHITELIST settings. Inspect how the MPI service is enabled for Fortran-instrumented applications and compare the generated .cali files with the expected MPI records. Done means MPI communication appears alongside the sweep regions.

Written by the indexing model from the issue text.