Fix metric validation name

Author: Anuraag Agrawal

.github/workflows/main-build.yml

@@ -92,7 +92,7 @@ jobs:
           path: test-framework
 
       - name: Run testing suite
-        run: ./gradlew :validator:run --args='-c springboot-otel-trace-metric-validation.yml --endpoint http://127.0.0.1:8080 --metric-namespace default -t ${{ github.run_id }}-${{ github.run_number }}'
+        run: ./gradlew :validator:run --args='-c springboot-otel-trace-metric-validation.yml --endpoint http://127.0.0.1:8080 --metric-namespace aws-otel-integ-test -t ${{ github.run_id }}-${{ github.run_number }}'
         env:
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}