Bug 17260: updatedatabase.pl fails on invalid entries in ENUM and BOOLEAN columns

Bug 17260: updatedatabase.pl fails on invalid entries in ENUM and BOOLEAN columns

The loading of file admin/searchengine/elasticsearch/mappings.yaml
specifies 'type' as empty, which fails with Mysql 5.7+ which is more
stringent.

Also, forcing an empty value into a boolean also fails.

Both issues arise when updatedatabase.pl hit 3.23.00.050.

NOTE: both issues could also be resolved by actually setting values in
      the load file. This doesn't make this solution incorrect, though.

To Test/reproduce:
-1) Happens with Mysql 5.7.4.  Maybe earlier, but certainly at
    that point. Use a Xenial kohadevbox to more easily test.
0) Find a database on 3.22 or earlier, save it.
    a) place
           sql_mode=IGNORE_SPACE,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
       into the [mysqld] section of /etc/mysql/mysql.conf.d/mysqld.cnf
    b) restart you mysql server
    c) drop the db and recreate it
    d) checkout the 3.22.x branch
    e) do a web install
    f) remove the added sql_mode
    g) restart the mysql server
1) Set your code base to master
2) run updatedatabase.pl
3) See the errors on 3.23.00.050
4) Apply the patch
5) Reload the 3.22 db.
   a) repeat steps 0(a)-0(g)
   b) don't forget the caching issues
6) succeed with updatedatabase.pl
7) drop the db and recreate it
8) run the web installer
9) notice no issues either.
10) run koha qa test tools

NOTE: This bug only solved the upgrade portion.
      I added the kohastructure.sql change as well.
      I confirmed that all the code changes were
      triggered with this test plan.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Mehdi Hamidi <mehdi.hamidi@inlibro.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>