Fix permissions on fake root cert that is injected for login testing. It was getting 0600

src/scripts/mod_for_test_scripts/710enableAuthTesting

Index: src/scripts/mod_for_test_scripts/710enableAuthTesting
diff --git a/src/scripts/mod_for_test_scripts/710enableAuthTesting b/src/scripts/mod_for_test_scripts/710enableAuthTesting
index edf869f225ae79ee56ee0a8b9ef30867410766ce..fb00cff18135e0c0bc901837eca399b6f113a2b5 100755
--- a/src/scripts/mod_for_test_scripts/710enableAuthTesting
+++ b/src/scripts/mod_for_test_scripts/710enableAuthTesting
@@ -15,5 +15,7 @@ cat "${CERT_DIR}/${CERT_NAME}.key" > "${ROOT_FS_DIR}/etc/${CERT_NAME}.key"
 # Sadly, our fake cert HAS to be first in this file.
 TMPFILE=$(mktemp)
 CERT_FILE="${ROOT_FS_DIR}/etc/login_trust_root.pem"
+PERMS=$(stat --printf="%a" "${CERT_FILE}")
 cat "${CERT_DIR}/${CERT_NAME}.pem" "${CERT_FILE}" > "${TMPFILE}"
 mv -f "${TMPFILE}" "${CERT_FILE}"
+chmod "${PERMS}" "${CERT_FILE}"