Cosmetic tweak in tutorials.

Make progress printer show correct epochs limit in most cases.

Tutorials/CNTK_201B_CIFAR-10_ImageHandsOn.ipynb

@@ -483,7 +483,7 @@
     "    }\n",
     "\n",
     "    log_number_of_parameters(z) ; print()\n",
-    "    progress_printer = ProgressPrinter(tag='Training')\n",
+    "    progress_printer = ProgressPrinter(tag='Training', num_epochs=max_epochs)\n",
     "\n",
     "    # perform model training\n",
     "    batch_index = 0\n",

Tutorials/CNTK_202_Language_Understanding.ipynb

@@ -437,8 +437,8 @@
     "\n",
     "    # process minibatches and perform model training\n",
     "    log_number_of_parameters(model)\n",
-    "    progress_printer = ProgressPrinter(tag='Training')\n",
-    "    #progress_printer = ProgressPrinter(freq=100, first=10, tag='Training') # more detailed logging\n",
+    "    progress_printer = ProgressPrinter(tag='Training', num_epochs=max_epochs)\n",
+    "    #progress_printer = ProgressPrinter(freq=100, first=10, tag='Training', num_epochs=max_epochs) # more detailed logging\n",
     "\n",
     "    t = 0\n",
     "    for epoch in range(max_epochs):         # loop over epochs\n",
@@ -560,7 +560,7 @@
     "    dummy_learner = adam_sgd(criterion.parameters, \n",
     "                             lr=lr_schedule, momentum=momentum_as_time_constant, low_memory=True)\n",
     "    evaluator = Trainer(model, criterion, dummy_learner)\n",
-    "    progress_printer = ProgressPrinter(tag='Evaluation')\n",
+    "    progress_printer = ProgressPrinter(tag='Evaluation', num_epochs=0)\n",
     "\n",
     "    while True:\n",
     "        minibatch_size = 500\n",