[Test] Generate HTML report as a self-contained HTML.

Signed-off-by: Giacomo Marciani <mgiacomo@amazon.com>

Author: gmarciani

tests/integration-tests/test_runner.py

@@ -548,6 +548,7 @@ def _get_pytest_args(args, regions, log_file, out_dir):  # noqa: C901
 
     if "html" in args.reports:
         pytest_args.append("--html={0}/{1}/results.html".format(args.output_dir, out_dir))
+        pytest_args.append("--self-contained-html")
 
     _set_custom_packages_args(args, pytest_args)
     _set_ami_args(args, pytest_args)