update helm install to use hardcoded agent image and helm branch

Author: JayPolanco

.github/workflows/eks-performance-cluster-addon-install.yml

@@ -173,10 +173,11 @@ jobs:
         run: |
           aws eks update-kubeconfig --name $CLUSTER_NAME --region $AWS_REGION
 
+      # TODO: Revert to using main helm branch when changes from leader-election are merged in
       - name: Clone Helm Charts Repository
         run: |
           rm -rf ./helm-charts
-          git clone -b ${{ inputs.helm-charts-branch || 'main' }} https://github.com/aws-observability/helm-charts.git ./helm-charts
+          git clone -b ${{ inputs.helm-charts-branch || 'sky333999/leader-election' }} https://github.com/aws-observability/helm-charts.git ./helm-charts
 
       - name: Clone Test Repo
         uses: actions/checkout@v4
@@ -185,17 +186,14 @@ jobs:
           ref: ${{ env.CWA_GITHUB_TEST_REPO_BRANCH }}
           path: ./test-repo
 
-      - name: Label nodes for CloudWatch Agent targeting
-        run: |
-          kubectl label nodes -l 'node.kubernetes.io/instance-type=t3.medium' cwagent-target="true"
-
       - name: Replace hostname in override files
         run: |
           HOSTNAME=$(kubectl get nodes -l eks.amazonaws.com/nodegroup=$CLUSTER_NAME-leader-node -o jsonpath='{.items[0].metadata.name}')
           for file in ./test-repo/test/performance/eks/resources/leader_election_overrides/*; do
             sed -i "s/<hostname>/$HOSTNAME/g" "$file"
           done
 
+      # TODO: Revert to using workflow built agent image once required changes are made on main branch
       - name: Check node count and manage Helm chart
         run: |
           NODE_COUNT=$(kubectl get nodes --no-headers | wc -l)
@@ -222,9 +220,9 @@ jobs:
               --create-namespace \
               --set clusterName=${{ inputs.cluster_name ||env.CLUSTER_NAME }} \
               --set region=${{ inputs.region || env.AWS_REGION }} \
-              --set agent.image.repository=${{ inputs.cloudwatch_agent_repository || env.AGENT_ECR_TEST_REPO }} \
-              --set agent.image.tag=${{ inputs.cloudwatch_agent_tag || github.sha }} \
-              --set agent.image.repositoryDomainMap.public=${{ steps.login-ecr.outputs.registry }} \
+              --set agent.image.repository="cloudwatch-agent" \
+              --set agent.image.tag="latest" \
+              --set agent.image.repositoryDomainMap.public="public.ecr.aws/q4e2d9n7" \
               --set manager.image.repository=${{ inputs.cloudwatch_agent_operator_repository || env.OPERATOR_ECR_TEST_REPO }} \
               --set manager.image.tag=${{ inputs.cloudwatch_agent_operator_tag || needs.GetLatestOperatorCommitSHA.outputs.operator_commit_sha }} \
               --set manager.image.repositoryDomainMap.public=${{ steps.login-ecr.outputs.registry }} \