Quiet warnings on building queryAPI-sim

Quiet the following warnings when building tests:
[ 97%] Building CXX object src/ec2_gahp/CMakeFiles/queryAPI-sim.dir/queryAPI-sim.cpp.o
/home/nwp/htcondor/src/ec2_gahp/queryAPI-sim.cpp: In function ‘std::string handleRequest(const string&)’:
/home/nwp/htcondor/src/ec2_gahp/queryAPI-sim.cpp:766:50: warning: format not a string literal and no format arguments [-Wformat-security]
/home/nwp/htcondor/src/ec2_gahp/queryAPI-sim.cpp:797:46: warning: format not a string literal and no format arguments [-Wformat-security]
Linking CXX executable ../condor_tests/queryAPI-sim
[ 97%] Built target queryAPI-sim