Extend test_fsdev_is_local_fs to verify GPFS
Extend test_fsdev_is_local_fs to verify GPFS

Test for commit 1541487 - add GPFS into fake_mtab (which is
utilized by the test_fsdev_is_local_fs) to make sure that it
is not detected as a local filesystem.

For more details also see
https://www.ibm.com/developerworks/systems/library/es-gpfs/index.html

OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap