Bug 10271: regression test for search using indexes containing 'ns'

Bug 10271: regression test for search using indexes containing 'ns'

This patch adds a regression test for doing a form-based catalog
search using an index that contains the string 'ns' in its name.  In
this case, the index being tested is 'Code-institution'.

To test
-------
[1] Prove -v t/db_dependent/Search.t should have two failed tests;
    one each for GRS-1 and DOM testing.
[2] After applying the main patch for this bug, the tests should
    pass.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 935ed2876b3902ca5e2dfa2cc258baf6fc464ab3)
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>