kata-deploy: fix install failing to chmod runtime-rs/bin/*

The kata-deploy install method tried to `chmod +x /opt/kata/runtime-rs/bin/*` but it isn't
always true that /opt/kata/runtime-rs/bin/ exists. For example, the
s390x payload does not build the kernel-dragonball-experimental
artifacts. So let's ensure the dir exist before issuing the command.

Fixes #6494
Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>

tools/packaging/kata-deploy/scripts/kata-deploy.sh

@@ -58,7 +58,8 @@ function install_artifacts() {
 	echo "copying kata artifacts onto host"
 	cp -au /opt/kata-artifacts/opt/kata/* /opt/kata/
 	chmod +x /opt/kata/bin/*
-	chmod +x /opt/kata/runtime-rs/bin/*
+	[ -d /opt/kata/runtime-rs/bin ] && \
+		chmod +x /opt/kata/runtime-rs/bin/*
 }
 
 function configure_cri_runtime() {