PMM-12892 exporter test for gh actions (#3536)

* PMM-12892 MongoDB Exporter for GH Actions

* Update pmm2-ui-tests-fb.yml

.github/workflows/pmm2-ui-tests-fb.yml

@@ -106,6 +106,20 @@ jobs:
       #      tags_for_tests: '@bm-common|@bm-locations' -- include bm-common once setup for mysql fixed
       tags_for_tests: '@bm-locations'
 
+  exporters:
+    name: Exporters tests
+    uses: ./.github/workflows/ui-tests.yml
+    secrets: inherit
+    with:
+      server_image: ${{ inputs.server_image || 'perconalab/pmm-server:dev-latest' }}
+      client_version: ${{ inputs.client_version || 'dev-latest' }}
+      client_image: ${{ inputs.client_image || 'perconalab/pmm-client:dev-latest' }}
+      pmm_qa_branch: ${{ inputs.pmm_qa_branch || 'main' }}
+      pmm_ui_branch: ${{ inputs.pmm_ui_branch || 'main' }}
+      sha: ${{ inputs.sha || github.event.pull_request.head.sha ||  'null' }}
+      client_flags: '--mongo-replica-for-backup'
+      tags_for_tests: '@mongodb-exporter|@exporters'
+
   instances:
     name: Instances UI tests
     uses: ./.github/workflows/ui-tests.yml