improvement(reporting): Add argus links to email template and elastic

This commit adds links to argus to the elastic search index and email
templates, allowing users to find argus runs quickly from those places.

Fixes scylladb/qa-tasks#1490

sdcm/report_templates/results_base.html

@@ -176,6 +176,7 @@ <h3>Test details</h3>
             {% endif %}
             {% if test_id %}
             <li>Test-id: {{ test_id }}</li>
+            <li><a href="https://argus.scylladb.com/tests/scylla-cluster-tests/{{ test_id }}">Link to argus</a></li>
             {% endif %}
             {% if start_time %}
             <li>Start time: {{ start_time }}</li>

sdcm/reporting/elastic_reporter.py

@@ -45,6 +45,7 @@ def report_run(self, run_id: str, status: str, index=None) -> bool:
             "status": status,
             "build_id": job_name,
             "build_url": build_url,
+            "argus_url": f"https://argus.scylladb.com/tests/scylla-cluster-tests/{run_id}",
             "build_number": build_number,
         }