Update tssc-test-image in e2e tests to use a specific self-signed image

Author: rhopp

integration-tests/pipelines/tssc-cli-e2e.yaml

@@ -269,7 +269,7 @@ spec:
         - name: oci-container
           value: "quay.io/konflux-test-storage/rhtap-team/rhtap-cli:$(context.pipelineRun.name)"
         - name: tssc-test-image
-          value: $(params.tssc-test-image)
+          value: "quay.io/rhopp/tssc-tests:self_signed"
         - name: testplan
           value: $(params.testplan)
     - name: rhtap-ui-tests
@@ -293,7 +293,7 @@ spec:
         - name: oci-container
           value: "quay.io/konflux-test-storage/rhtap-team/rhtap-cli:$(context.pipelineRun.name)"
         - name: tssc-test-image
-          value: $(params.tssc-test-image)
+          value: "$(params.tssc-test-image)"
         - name: testplan
           value: $(params.testplan)
   finally: