add validation step before using GCP metadata (#14801)

* add GCP data validation

* Update daemon/system-info.sh

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Co-authored-by: Austin S. Hemmelgarn <ahferroin7@gmail.com>

daemon/system-info.sh

@@ -462,7 +462,7 @@ if [ "${VIRTUALIZATION}" != "none" ] && command -v curl > /dev/null 2>&1; then
 
     # Try GCE computeMetadata v1
     if [ "${CLOUD_TYPE}" = "unknown" ]; then
-      if [ -n "$(curl --fail -s --connect-timeout 1 -m 3 --noproxy "*" -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1")" ]; then
+      if curl --fail -s --connect-timeout 1 -m 3 --noproxy "*" -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1" | grep -sq computeMetadata; then
         CLOUD_TYPE="GCP"
         CLOUD_INSTANCE_TYPE="$(curl --fail -s --connect-timeout 1 -m 3 --noproxy "*" -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/instance/machine-type")"
         [ -n "$CLOUD_INSTANCE_TYPE" ] && CLOUD_INSTANCE_TYPE=$(basename "$CLOUD_INSTANCE_TYPE")