EX-8180 lipe: Fix typos, code style, size display in stats

EX-8180 lipe: Fix typos, code style, size display in stats

This patch fixes grammatical errors, incorrect display
of statistics in some reports due to incorrect size
alignment, indentation and alignment up to
80 characters where possible. Renamed some types and
variable names. Added additional help information.

Test-Parameters: trivial testlist=sanity-lipe-scan3
Signed-off-by: Vitaliy Kuznetsov <vkuznetsov@ddn.com>
Change-Id: I97692f006391ddfa5b6e474936e2a8edde69d8c8
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/52221
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Patrick Farrell <pfarrell@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>