Add test count to PDF report (#482)

* Add test count to PDF report

* Fix pylint issue

* Exclude error

---------

Signed-off-by: J Boddey <boddey@google.com>

framework/python/src/common/testreport.py

@@ -428,9 +428,14 @@ def generate_footer(self, page_num):
 
   def generate_results(self, json_data, page_num):
 
-    result_list = '''
+    successful_tests = 0
+    for test in self._results:
+      if test['result'] != 'Error':
+        successful_tests += 1
+
+    result_list = f'''
       <div class="result-list">
-        <h3>Results List</h3>
+        <h3>Results List <small>({len(successful_tests)}/{self._total_tests})</small></h3>
         <div class="result-line" style="margin-top: 10px;border-top-left-radius:4px;border-top-right-radius:4px;">
           <div class="result-list-header-label" style="left: .1in">Name</div>
           <div class="result-list-header-label" style="left: 2.8in">Description</div>