Add num_epoch and eval_metric training parameters to the CNNTrainer.ftl...

Add num_epoch and eval_metric training parameters to the CNNTrainer.ftl template and correct target code for corresponding test
2 jobs for added-trainer in 2 minutes and 11 seconds (queued for 1 second)
Status Job ID Name Coverage
  Windows
passed #167965
Windows10
masterJobWindows

00:01:06

 
  Linux
passed #167966
BranchJobLinux

00:01:05