Make existing code c++17 compliant for future upgrade #479
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When compiling the project with -std=c++17, there are a few sections of the code which cause problems due to deprecation of certain APIs. This PR aims to fix these while still remaining the current c++ standard version (14) until a decision has been made to upgrade it.
In one instance, our code was using std::random_shuffle (which was deprecated), and in another, we were using std::binary_function (which was also deprecated). For the first issue, the usage of this API had to be updated; instead of using std::random_shuffle, we now use std;:shuffle and pass in the std::mt19937 as a UniformRandomBitGenerator. For the latter issue, switching this to use std::function<bool(ServiceListener, ServiceListener)> is sufficient.
All changes were built and tested on all platforms.