Add progression stages for Love is in the Air's Bouquets of Red Roses to drop from dungeon bosses.

[heyitsbench]

Sourced from Wowhead, used existing Northrend dungeon boss loot as reference. Accounts for vanilla content as the drops were not updated for TBC.

Here is the expected loot with this PR:

Red Roses:
 -  Vanilla
        Princess Moira Bronzebeard - Blackrock Depths
        Archivist Galford - Stratholme
        Lorekeeper Polkelt - Scholomance
        Illyanna Ravenoak - Dire Maul
 -  WotLK
        Prince Keleseth - Utgarde Keep
        Maiden of Grief - Halls of Stone
        Prince Taldaram - Ahn'kahet: The Old Kingdom

Ebon Roses:
 -  WotLK
        Prince Keleseth - Utgarde Keep
        Maiden of Grief - Halls of Stone
        Prince Taldaram - Ahn'kahet: The Old Kingdom