refactor: gRPC remote FTS refactoring

[hpohekar]

closes #2744

1. Added fix for Nightly Dev Test 24.2
2. Changed host_mount_path.
3. Resolved file modification issue.

>>> import ansys.fluent.core as pyfluent
>>> from ansys.fluent.core import examples
>>> case_file_name = examples.download_file("mixing_elbow.cas.h5", "pyfluent/mixing_elbow", return_without_path=False)
/mnt/c/Users/hpohekar/pyfluent/src/ansys/fluent/core/examples/downloads.py:73: UserWarning:
File already exists. File path:
/home/hpohekar/.local/share/ansys_fluent_core/examples/mixing_elbow.cas.h5

  warnings.warn(
>>> case_file_name
'/home/hpohekar/.local/share/ansys_fluent_core/examples/mixing_elbow.cas.h5'
>>> import os
>>> os.path.getsize(case_file_name)
3062081                                                                                <<<<<<<<---------------------
>>> solver = pyfluent.launch_fluent()
>>> solver.file.read_case(file_name=case_file_name)
Fast-loading "/ansys_inc/v242/fluent/fluent24.2.0/addons/afd/lib/hdfio.bin"
Done.

Reading from 83baa1ed3968:"/mnt/pyfluent/mixing_elbow.cas.h5" in NODE0 mode ...
  Reading mesh ...
       17822 cells,     1 cell zone  ...
          17822 mixed cells,  zone id: 87
       91581 faces,     7 face zones ...
           2168 polygonal wall faces,  zone id: 34
            268 polygonal wall faces,  zone id: 33
            155 polygonal pressure-outlet faces,  zone id: 32
            152 polygonal velocity-inlet faces,  zone id: 31
             55 polygonal velocity-inlet faces,  zone id: 30
           2001 polygonal symmetry faces,  zone id: 29
          86782 mixed interior faces,  zone id: 89
       66417 nodes,     1 node zone  ...
Warning: reading 2 partition grid onto 1 compute node machine.
         Combining every 2 partitions.
  Done.


Building...
     mesh
     materials,
     interface,
     domains,
        mixture
     zones,
        wall-elbow
        wall-inlet
        outlet
        cold-inlet
        hot-inlet
        symmetry-xyplane
        interior--elbow-fluid
        elbow-fluid
     parallel,
Done.
>>> os.path.getsize(case_file_name)
3062081                                                                    <<<<<<<<---------------------
>>> solver.file.write_case(file_name="download_mixing_elbow.cas.h5")

Writing to 83baa1ed3968:"/mnt/pyfluent/download_mixing_elbow.cas.h5" in NODE0 mode and compression level 1 ...
Grouping cells for Laplace smoothing ...
       17822 cells,     1 zone  ...
       91581 faces,     7 zones ...
       66417 nodes,     1 zone  ...
  Done.
Done.
>>>

[hpohekar]

#2775