15517 FIX check_cert: Fixed metrics in output

The active check for monitoring certificates produces two metrics by now.
These metrics have been written in a broken format and therefore never
been created. This is now fixed and both metrics are now available.

The affected metrics are
* certificate_remaining_validity (is also used for Perf-O-Meter)
* overall_execution_time

CMK-17766

Change-Id: Icce810f87375e4b25e1662ec75068b89c66f193b

.werks/15517.md

@@ -0,0 +1,20 @@
+[//]: # (werk v2)
+# check_cert: Fixed metrics in output
+
+key        | value
+---------- | ---
+date       | 2024-09-23T14:48:43+00:00
+version    | 2.4.0b1
+class      | fix
+edition    | cre
+component  | checks
+level      | 2
+compatible | yes
+
+The active check for monitoring certificates produces two metrics by now.
+These metrics have been written in a broken format and therefore never
+been created. This is now fixed and both metrics are now available.
+
+The affected metrics are
+* certificate_remaining_validity (is also used for Perf-O-Meter)
+* overall_execution_time

cmk/plugins/collection/graphing/check_cert_certificate_remaining_validity.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+# Copyright (C) 2024 Checkmk GmbH - License: GNU General Public License v2
+# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
+# conditions defined in the file COPYING, which is part of this source code package.
+
+from cmk.graphing.v1 import metrics, perfometers, Title
+
+UNIT_TIME = metrics.Unit(metrics.TimeNotation())
+
+metric_certificate_remaining_validity = metrics.Metric(
+    name="certificate_remaining_validity",
+    title=Title("Remaining certificate validity time"),
+    unit=UNIT_TIME,
+    color=metrics.Color.YELLOW,
+)
+
+perfometer_certificate_remaining_validity = perfometers.Perfometer(
+    name="certificate_remaining_validity",
+    focus_range=perfometers.FocusRange(
+        perfometers.Closed(0),
+        perfometers.Open(15552000),  # 180 days
+    ),
+    segments=["certificate_remaining_validity"],
+)

cmk/plugins/collection/graphing/check_cert_overall_response_time.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+# Copyright (C) 2024 Checkmk GmbH - License: GNU General Public License v2
+# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
+# conditions defined in the file COPYING, which is part of this source code package.
+
+from cmk.graphing.v1 import metrics, Title
+
+UNIT_TIME = metrics.Unit(metrics.TimeNotation())
+
+metric_overall_response_time = metrics.Metric(
+    name="overall_response_time",
+    title=Title("Overall response time"),
+    unit=UNIT_TIME,
+    color=metrics.Color.ORANGE,
+)