Assorted changes leading toward dqsegdb 2.0.0

* debian: update packaging for python3

* spec: update packaging for python3

Rebase from upstream

Several assorted changes (use diff to find them)

Fixed issue with dqsegdb_web DB not being populated correctly on segments-web; fixed some files not being copied to the right filenames in /usr/share/dqsegdb_web/ on segments-web.

Added code to rename existing versions of some Shibbloleth-related files before downloading new copies, then check that they downloaded, and if not, copy from a local source; other minor changes.

Added code to verify that MariaDB is running before trying to populate a DB or import users and privileges; reports whether MariaDB and httpd started successfully; other minor changes

Added a check that /backup/segdb/reference/install_support/ is readable (mounted); added check and warning for host variable not matching hostname

Minor tweaks; final version that will be used to install segments-web (before more tweaks)

Lots of additions for segments-web; lots of additions to to-do list

Separated script into 'run blocks' that can be run independently of each other; sifting carefully through script; fixing some issues; adding some issues to the 'to do' list at the end; working on segments-web installation, esp. Shibboleth

Some Shibboleth items for segments-web

Added more stuff for segments-web

Additions for segments-web and Shibboleth

Items added to segments-web section

Some minor fixes

Several bug fixes

Minor changes, incl. a TOC

More changes; ready to run (after one last check for missing items)

Made *lots* of changes and improvements; come back to the ###here point and pick up from there, to finish this out

Mostly changes to what certificates are copied to where and commenting out everything with dqxml_pull_from_obs

Updates as a result of testing.

Added commands to copy segments-dev2 certificates, and a few other tweaks

Added stuff for regression tests, verbose output, and checkpoints along the installation process

Minor lgmm addition - create whitelist and blacklist files

grid-mapfile stuff

Some fixes and improvements; near to being fully functional

Minor updates

More changes to the installation script.  Near to a viable version.

More changes; still more to do

Another update.  Need to make sure that we modify httpd stuff to match each machine.  Also, crontab for each machine.

An update while editing