Allow the tcp-clients to be specified as percent, set default to 50%
Change the tcp-clients configuration value to allow specifying percents (out of the maximum allowed file descriptors) and set the default to 50% of that value.
Closes #3958
Change the tcp-clients configuration value to allow specifying percents (out of the maximum allowed file descriptors) and set the default to 50% of that value.
Closes #3958