Monitoring configuration for production (#3375)

In this PR we add a configuration of monitoring for the production
environment.

The configuration is based on a couple of PRs deployed and tested on the
keep-test environment:
#3353
#3357
#3373

The following resources are exposed:
Public Dashboard: https://public.monitoring.threshold.network
Grafana: https://monitoring.threshold.network/grafana
Prometheus: https://monitoring.threshold.network/prometheus

infrastructure/kube/keep-prd/monitoring/README.adoc

@@ -0,0 +1,37 @@
+:icons: font
+
+ifdef::env-github[]
+:tip-caption: :bulb:
+:note-caption: :information_source:
+:important-caption: :heavy_exclamation_mark:
+:caution-caption: :fire:
+:warning-caption: :warning:
+endif::[]
+
+# Monitoring
+
+The monitoring stack has the following components:
+
+1. Prometheus
+2. Trickster
+3. Grafana
+
+The production monitoring is based on the configuration described in the link:../../keep-test/monitoring/README.adoc[keep-test monitoring documentation].
+
+Resources are exposed publicly under the following URLs:
+
+[cols="^1s,2m"]
+|===
+^h|Service
+^h|Address
+
+|Public Dashboard
+|link:https://public.monitoring.threshold.network[]
+
+|Grafana
+|link:https://monitoring.threshold.network/grafana[]
+
+|Prometheus
+|link:https://monitoring.threshold.network/prometheus[]
+
+|===

infrastructure/kube/keep-prd/monitoring/grafana/config/dashboards.yaml

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+apiVersion: 1
+providers:
+  - name: dashboards-provider
+    type: file
+    disableDeletion: true
+    updateIntervalSeconds: 10
+    allowUiUpdates: true
+    options:
+      path: "/var/lib/grafana/dashboards"
+      foldersFromFilesStructure: true

infrastructure/kube/keep-prd/monitoring/grafana/config/datasources.yaml

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+apiVersion: 1
+datasources:
+  - name: Trickster
+    type: prometheus
+    access: proxy
+    editable: true
+    orgId: 1
+    url: http://trickster:8480/prometheus
+    version: 1
+    isDefault: true

infrastructure/kube/keep-prd/monitoring/grafana/config/grafana.ini

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+[auth.google]
+enabled = true
+scopes = https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email
+auth_url = https://accounts.google.com/o/oauth2/auth
+token_url = https://accounts.google.com/o/oauth2/token
+allow_sign_up = true
+
+[feature_toggles]
+publicDashboards = true