add aws credentials for system tests (#2870)

.github/workflows/system-tests.yml

@@ -43,6 +43,8 @@ jobs:
           - uds-echo
         scenario:
           - DEFAULT
+          - INTEGRATIONS
+          - CROSSED_TRACING_LIBRARIES
           - APPSEC_DISABLED
           - APPSEC_BLOCKING
           - APPSEC_BLOCKING_FULL_DENYLIST
@@ -103,6 +105,10 @@ jobs:
       DD_API_KEY: ${{ secrets.DD_API_KEY }}
       SYSTEM_TESTS_E2E_DD_API_KEY: ${{ secrets.SYSTEM_TESTS_E2E_DD_API_KEY }}
       SYSTEM_TESTS_E2E_DD_APP_KEY: ${{ secrets.SYSTEM_TESTS_E2E_DD_APP_KEY }}
+      AWS_ACCESS_KEY_ID: ${{ secrets.SYSTEM_TESTS_IDM_AWS_ACCESS_KEY_ID }}
+      AWS_SECRET_ACCESS_KEY: ${{ secrets.SYSTEM_TESTS_IDM_AWS_SECRET_ACCESS_KEY }}
+      AWS_REGION: us-east-1
+      AWS_DEFAULT_REGION: us-east-1  # AWS services should use `AWS_REGION`, but some still use the older `AWS_DEFAULT_REGION`
     name: Test (${{ matrix.weblog-variant }}, ${{ matrix.scenario }})
     steps:
       - name: Checkout system tests