fs/gpfs: Solve issues while setting GPFS hints

1- Remove the common symbols issue: global variable not initialized. (open-mpi#7424)
Move the variables to local scope within the set_info function.
2- Remove GPFS hints using datashipping: not used anymore
3- Redirect output stream to corresponding fs framework.

Signed-off-by: raafatfeki <fekiraafat@gmail.com>

Author: raafatfeki