Update usage of time in armem/server

...ce/RobotAPI/libraries/armem/server/MemoryToIceAdapter.cpp

.../server/ltm/base/filter/equalityFilter/EqualityFilter.cpp

...erver/ltm/base/filter/frequencyFilter/FrequencyFilter.cpp

source/RobotAPI/libraries/armem/server/ltm/disk/Entity.cpp

...botAPI/libraries/armem/server/ltm/disk/EntitySnapshot.cpp

...ies/armem/server/ltm/disk/detail/util/filesystem_util.cpp

...aries/armem/server/ltm/disk/detail/util/filesystem_util.h

...armem/server/query_proc/base/EntityQueryProcessorBase.cpp

...s/armem/server/query_proc/base/EntityQueryProcessorBase.h

...obotAPI/libraries/armem/server/test/ArMemLTMBenchmark.cpp

source/RobotAPI/libraries/armem/server/test/ArMemLTMTest.cpp

.../RobotAPI/libraries/armem/server/test/ArMemMemoryTest.cpp

...e/RobotAPI/libraries/armem/server/test/ArMemQueryTest.cpp