auth: Add more SQL schema files to packages and tarballs

[mnordhoff]

Short description

• Add the 4.3.0 SQL schema upgrade files to tarballs. (I think.)
• Add the 3.4.0 through 4.3.0 files to the packages!
• Add the bind files to the pdns (rpm) and pdns-backend-bind (deb) packages.
• Add enable-foreign-keys.mysql.sql to the package and tarballs. (Don't know if it's useful, but it's not not useful.)
• Also reformat godbc's Makefile.am similar to how the other backends were done. (And switch the order of a .cc file and a .hh file; I think it's an unordered list?)

The tarball issue was reported by HellSpawn the other day.

I've tested building CentOS 8, Debian Buster and Ubuntu Bionic with pdns-builder, and listed the contents of the debs and rpms and tarballs produced, but I haven't done any further testing (like actually installing things).

I duplicated SQL files between EXTRA_DIST and dist_doc_DATA, which was probably unnecessary.

I don't know if there are additional steps beyond "create pdns-backend-bind.docs", but that's what I did and it worked...

Checklist

I have:

• read the CONTRIBUTING.md document
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[pieterlexis]

I duplicated SQL files between EXTRA_DIST and dist_doc_DATA, which was probably unnecessary.

That is the case :)

[pieterlexis]

lgtm, apart from the "I duplicated SQL files between EXTRA_DIST and dist_doc_DATA, which was probably unnecessary." comment

[mnordhoff]

Deduplicated (but this commit is totally untested)

[Habbie]

http://builder.powerdns.com/#/builders/99/builds/1171

[mnordhoff]

The CentOS 8 build failed because this branch doesn't have #8807. >_<

[Habbie]

The CentOS 8 build failed because this branch doesn't have #8807

Ugh! Can you rebase?

[mnordhoff]

Ugh! Can you rebase?

Done. Dunno if it works, though!

[Habbie]

Done. Dunno if it works, though!

http://builder.powerdns.com/#/buildrequests/123604?redirect_to_build=true

[Habbie]

• the tarball contains all .sql files (except one that is part of a test, this is fine)
• .sql content is consistent between el6/7/8, with the interesting note that the files move from (example) /usr/share/doc/pdns-backend-postgresql-4.3.0/3.4.0_to_4.1.0_schema.pgsql.sql in el7 to /usr/share/doc/pdns-backend-postgresql/3.4.0_to_4.1.0_schema.pgsql.sql in el8. Of course, that has nothing to do with this PR.
• centos packages appear to be complete
• .sql content is consistent between debian stretch and buster
• debian packages appear to be lacking 3.4.0_to_4.0.0_schema.sqlite3.sql

[Habbie]

debian packages appear to be lacking 3.4.0_to_4.0.0_schema.sqlite3.sql

CORRECTION: /usr/share/doc/pdns-backend-sqlite3/3.4.0_to_4.0.0_schema.sqlite3.sql.gz | unchanged