* parallelize getting mount info
* fixed timeout and made 8 max thread count
- minor cleanup
- avoid empty mount entries
- set timeout on get
- enforce timeout per mount/thread
- make note on failure per mount
- make note on timeout per mount
- ensure proper pool control
- minor fixes
- less vars, simpler code
- move filter 'pre threading'
- remove timeout for all mounts, now per mount
- also use cpu count from multiprocessing lib
- moved 'bind' options out of thread as per comments
- warn on error, more info on failure to get info
* Move ansible.compat.tests to test/units/compat/.
* Fix unit test references to ansible.compat.tests.
* Move builtins compat to separate file.
* Fix classification of test/units/compat/ dir.
* Add more mount point statvfs info including sizes
Based on https://github.com/ansible/ansible/pull/12073
facts.utils.get_mount_size() now returns a dict of most
of the posix statvfs data, including block_size and inode
counts.
Update the facts.hardware classes that use get_mount_size() to
use the new info by mount_info.update(mount_statvfs_inof) to merge.
* add back unit tests for LinuxHardware mount/fs facts
* add test cases for facts.utils.get_mount_size
