Moved the report template under tools/run_tests.

tools/run_tests/report_utils.py

@@ -78,8 +78,7 @@ def render_interop_html_report(
   client_langs, server_langs, test_cases, auth_test_cases, http2_cases, 
   resultset, num_failures, cloud_to_prod, http2_interop):
   """Generate HTML report for interop tests."""
-  html_report_dir = 'reports'
-  template_file = os.path.join(html_report_dir, 'interop_html_report.template')
+  template_file = 'tools/run_tests/interop_html_report.template'
   try:
     mytemplate = Template(filename=template_file, format_exceptions=True)
   except NameError:
@@ -104,6 +103,9 @@ def render_interop_html_report(
           'num_failures': num_failures,
           'cloud_to_prod': cloud_to_prod,
           'http2_interop': http2_interop}
-  html_file_path = os.path.join(html_report_dir, 'index.html')
+  html_report_out_dir = 'reports' 
+  if not os.path.exists(html_report_out_dir):
+    os.mkdir(html_report_out_dir) 
+  html_file_path = os.path.join(html_report_out_dir, 'index.html')
   with open(html_file_path, 'w') as output_file:
     mytemplate.render_context(Context(output_file, **args))