Hide the progress bar when calling curl in tests

Author: cbandy

testing/kuttl/e2e/exporter/01--check-exporter.yaml

@@ -15,7 +15,7 @@ commands:
       {
         METRICS=$(kubectl exec --namespace "${NAMESPACE}" \
           "${PRIMARY}" -c exporter \
-          -- curl http://localhost:9187/metrics)
+          -- curl --show-error --silent 'http://localhost:9187/metrics')
       } || {
         echo >&2 'curl metrics endpoint returned error'
         echo "${METRICS}"

testing/kuttl/e2e/exporter/11--check-exporter-tls.yaml

@@ -15,7 +15,7 @@ commands:
       {
         METRICS=$(kubectl exec --namespace "${NAMESPACE}" \
           "${PRIMARY}" -c exporter \
-          -- curl -k https://localhost:9187/metrics)
+          -- curl --insecure --show-error --silent 'https://localhost:9187/metrics')
       } || {
         echo >&2 'curl metrics endpoint returned error'
         echo "${METRICS}"

testing/kuttl/e2e/exporter/13--check-exporter.yaml

@@ -18,7 +18,7 @@ commands:
       {
         METRICS=$(kubectl exec --namespace "${NAMESPACE}" \
           "${PRIMARY}" -c exporter \
-          -- curl http://localhost:9187/metrics)
+          -- curl --show-error --silent 'http://localhost:9187/metrics')
       } || {
         echo >&2 'curl metrics endpoint returned error'
         echo "${METRICS}"