In the ordinance, order, or resolution authorizing the issuance of bonds under this subchapter, the commissioners court may:
(1) provide for the deposit and accounting of funds and the establishment and maintenance of an interest and sinking fund, a reserve fund, or other fund; and
(2) make additional covenants relating to the:
(A) bonds;
(B) pledged revenue; or
(C) operation and maintenance of any real property, building, or other facility, the revenue of which is pledged for bond payments.