Add PagerDuty integration platform

[mszostok]

Description

Changes proposed in this pull request:

• Add PagerDuty integration platform

Testing

1. Create cluster

2. Install ArgoCD and create example app

3. Create PagerDuty service

4. Change the argocd plugin to get rid of cloud check (we need to use local values.yaml)

5. Build plugin: PLUGIN_TARGETS='argocd' make build-plugins-single

6. Serve plugin: make serve-local-plugins

7. Use such configuration:

   communications:
     default-group:
       ## Settings for PagerDuty.
       pagerDuty:
         # -- If true, enables PagerDuty.
         enabled: true
         # -- The Integration Service Key
         integrationKey: 'key'
         bindings:
           # -- Notification sources configuration for the PagerDuty.
           sources:
             - k8s-err-events
             - k8s-deploy
             - argocd
   sources:
     argocd:
       displayName: argocd
       local-cloud/argocd:
         enabled: true
         config:
           log:
             level: debug
           argoCD:
             notificationsConfigMap:
               name: argocd-notifications-cm
               namespace: argocd
             uiBaseUrl: http://localhost:8080
           defaultSubscriptions:
             applications:
               - name: guestbook # your app name
                 namespace: argocd
           webhook:
             name: bk-{{ .SourceName }}
             register: true
             url: '{{ .IncomingWebhook.FullURLForSource }}'
   
         context:
           rbac:
             group:
               type: Static
               static:
                 values: [ "argocd" ]
   
     'k8s-deploy':
       displayName: "All events"
       botkube/kubernetes:
         enabled: true
         context:
           rbac:
             group:
               type: Static
               prefix: ""
               static:
                 values: [ "botkube-plugins-default" ]
           enabled: true
         config:
           namespaces:
             include:
               - ".*"
           event:
             types:
               - error
               - create
               - update
               - delete
           resources:
             - type: apps/v1/deployments
               event: # Overrides 'source'.kubernetes.event
                 types:
                   - create
                   - update
                   - delete
                   - error
               updateSetting:
                 includeDiff: true
                 fields:
                   - spec.template.spec.containers[*].image
   
   plugins:
     cacheDir: "/tmp/plugins"
     repositories:
       botkube:
         url: https://storage.googleapis.com/botkube-plugins-latest/plugins-index.yaml
       local-cloud:
         url:  http://localhost:3010/botkube.yaml
   
   settings:
     log:
       level: "debug"
       formatter: text
     kubeconfig: "/Users/mszostok/.kube/config"
     clusterName: "labs"
     upgradeNotifier: false
   
   analytics:
     disable: true
   

8. Run Botkube. I did it locally.

Related issue(s)

• https://github.com/kubeshop/botkube-cloud/issues/835
• Add initial Pager Duty platform docs botkube-docs#327

[mszostok]

I mentioned possible refactor here: https://github.com/kubeshop/botkube-cloud/issues/1059#issuecomment-2112512963

[pkosiec]

Works well 👌