IVGCVSW-3964 Implement the Periodic Counter Selection command handler

 * Improved the PeriodicCounterPacket class to handle errors properly
 * Improved the PeriodicCounterSelectionCommandHandler to handle
   invalid counter UIDs in the selection packet
 * Added the Periodic Counter Selection command handler to the
   ProfilingService class
 * Code refactoring and added comments
 * Added WaitForPacketSent method to the SendCounterPacket class
   to allow waiting for the packets to be sent (useful in the
   unit tests)
 * Added unit tests and updated the old ones accordingly
 * Fixed threading issues with a number of unit tests

Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
Change-Id: I271b7b0bfa801d88fe1725b934d24e30cd839ed7
diff --git a/src/profiling/RequestCounterDirectoryCommandHandler.cpp b/src/profiling/RequestCounterDirectoryCommandHandler.cpp
index e85acb4..b8ac9d9 100644
--- a/src/profiling/RequestCounterDirectoryCommandHandler.cpp
+++ b/src/profiling/RequestCounterDirectoryCommandHandler.cpp
@@ -21,7 +21,7 @@
     case ProfilingState::Uninitialised:
     case ProfilingState::NotConnected:
     case ProfilingState::WaitingForAck:
-        throw RuntimeException(boost::str(boost::format("Request Counter Directory Handler invoked while in an "
+        throw RuntimeException(boost::str(boost::format("Request Counter Directory Comand Handler invoked while in an "
                                                         "wrong state: %1%")
                                           % GetProfilingStateName(currentState)));
     case ProfilingState::Active: