Add missing RPM requirement
diff --git a/bootstrap/_rpm_common.sh b/bootstrap/_rpm_common.sh
index 5aca13cd4f4..042332f4bcb 100755
--- a/bootstrap/_rpm_common.sh
+++ b/bootstrap/_rpm_common.sh
@@ -40,6 +40,7 @@ if ! $tool install -y \
        augeas-libs \
        openssl-devel \
        libffi-devel \
+       redhat-rpm-config \
        ca-certificates
 then
     echo "Could not install additional dependencies. Aborting bootstrap!"

`redhat-rpm-config` provides the required `/usr/lib/rpm/redhat/redhat-hardened-cc1`.

At least available in Fedora and CentOS. No idea about other RPM distros in this case.
