Bug 15095: marc_modificacation_template_actions DB not consistent between fresh and...

Bug 15095: marc_modificacation_template_actions DB not consistent between fresh and updated DB

A review of the 3.20.00 + upgrade DB, compared to a fresh master install
highlighted an inconsistency on that table. This is mysqldbcompare's
output for it:

-   `action` enum('delete_field','update_field','move_field','copy_field','copy_and_replace_field') COLLATE utf8_unicode_ci DEFAULT NULL,
?                                                                        -------------------------                          ^^^^^^
+   `action` enum('delete_field','update_field','move_field','copy_field') COLLATE utf8_unicode_ci NOT NULL,

So one ENUM value is missing on fresh installs, and an upgraded one
yields a DEFAULT NULL configuration for the 'action' column.

To test:
1) have a v3.20.00 DB:
  > CREATE DATABASE koha_master_upgraded;
  $ git checkout v3.20.00
  $ mysql koha_master_upgraded < installer/data/mysql/kohastructure.sql
2) upgrade it to latest master by running:
  $ git checkout origin/master
  $ perl installer/data/mysql/updatedatabase.pl
3) Create a new DB
  > CREATE DATABASE koha_master_fresh;
  $ mysql koha_master_fresh < installer/data/mysql/kohastructure.sql
4) Run mysqldbcompare (you need mysql-utilities installed for that)
  $ mysqldbcompare --difftype=differ --server1=root@localhost \
                   --skip-data-check --skip-table-options \
                   --run-all-tests  koha_master_upgraded:koha_master_fresh
=> FAIL: You will notice the marc_modification_template_actions discrepancy
- Repeat from 1), but apply this patch on 2) before the upgrade.
=> SUCCESS: The DB's discrepancies are now irrelevant [1]
- Sign off :-D

[1] Only KEY definition order is 'wrong', but it is not relevant.

Signed-off-by: Frederic Demians <f.demians@tamil.fr>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>