MDEV-33837: Suspend package-contains-documentation-outside-usr-share-doc warnings

There is some package-contains-documentation-outside-usr-share-doc that
are better to be there than move somewhere else. They are:

 * mariadb-server: package-contains-documentation-outside-usr-share-doc [usr/share/mysql/errmsg-utf8.txt]
 * mariadb-server-core: package-contains-documentation-outside-usr-share-doc [usr/share/mysql/charsets/README]
 * mariadb-test: package-contains-documentation-outside-usr-share-doc [usr/share/mysql/mysql-test/README]

Also fix Mroonga

 * mariadb-plugin-mroonga: extra-license-file [usr/share/mysql/mroonga/COPYING]

debian/mariadb-plugin-mroonga.lintian-overrides

+# This little bit diffrent than MariaDB so needed file
+mariadb-plugin-mroonga: extra-license-file [usr/share/mysql/mroonga/COPYING]

debian/mariadb-server-core.lintian-overrides

@@ -6,3 +6,6 @@ spelling-error-in-binary noone no one [usr/sbin/mariadbd]
 spelling-error-in-binary thats that's [usr/sbin/mariadbd]
 spelling-error-in-binary theres there's [usr/sbin/mariadbd]
 spelling-error-in-binary yuR your [usr/sbin/mariadbd]
+
+# README non common place but good to be there
+package-contains-documentation-outside-usr-share-doc [usr/share/mysql/mysql-test/README]

debian/mariadb-server.lintian-overrides

@@ -35,3 +35,6 @@ spelling-error-in-binary theres there's [usr/bin/myisam_ftdump]
 spelling-error-in-binary theres there's [usr/bin/myisamchk]
 spelling-error-in-binary theres there's [usr/bin/myisamlog]
 spelling-error-in-binary theres there's [usr/bin/myisampack]
+
+# This is not documentation
+package-contains-documentation-outside-usr-share-doc [usr/share/mysql/errmsg-utf8.txt]

debian/mariadb-test.lintian-overrides

@@ -26,3 +26,6 @@ spelling-error-in-binary yuR your [usr/bin/mariadb-test-embedded]
 # Location for this is usr/share/mysql/mysql-test/mysql-test-run
 # so it's not missing it just in unusual location
 spare-manual-page [usr/share/man/man1/mysql-test-run.pl.1.gz]
+
+# README non common place but good to be there
+package-contains-documentation-outside-usr-share-doc [usr/share/mysql/mysql-test/README]