It is raining money for Palm Beach and South Florida housekeepers. With demand soaring, salaries are reaching new heights of $150,000 or more, and bidding wars are becoming commonplace, according to staffing firms. A surge of wealthy migrants from high-tax states like New York has fueled record demand for household staff in Florida’s elite enclaves, particularly Palm Beach. Staffing agencies told CNBC that there’s skyrocketing demand for everything from nannies and chefs to butlers (now called “hospitality managers” or “estate managers”) and even personal security. However, the biggest headach…