LUDOC-11 misc: update URLs from http to https

LUDOC-11 misc: update URLs from http to https

Change URLs in the manual to use https:// from http:// and update
those URLs to new targets where they no longer exist.

Since some of the URL updates are also related to cross-references
to labels within the document, update those labels to have useful
names, rather than the automatically-generated reference names.

Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: Id3f195ceebbe269a10e3218835f855ff1d3ebbe5
Reviewed-on: https://review.whamcloud.com/39584
Reviewed-by: Peter Jones <pjones@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>