AGENT-1417: Add kind verification in InternalReleaseImage check

In order to increase the expected storage size a check is done for the
existence of a file with IRI. This adds a check to confirm that
the file actually contains a resource of type InternalReleaseImage.

Author: bfournie

data/data/agent/files/usr/local/bin/configure-assisted-hw-requirements.sh

@@ -8,7 +8,9 @@ MASTER_DISK_SIZE=100
 SNO_DISK_SIZE=100
 
 # Increase disk size requirements for NoRegistryClusterInstall
-if [ -f /etc/assisted/extra-manifests/internalreleaseimage.yaml ]; then
+# Check that the file exists and contains kind: InternalReleaseImage
+if [ -f /etc/assisted/extra-manifests/internalreleaseimage.yaml ] && \
+   grep -q "^kind:[[:space:]]*InternalReleaseImage[[:space:]]*$" /etc/assisted/extra-manifests/internalreleaseimage.yaml; then
     MASTER_DISK_SIZE=220
     SNO_DISK_SIZE=220
 fi