Set Flux CLI version to 2.4.0

Change-Id: I50367ac62ed3bb2e97c5010e264685ac4667d1aa
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

installers/mgmt-cluster/setup-cli-tools.sh

@@ -47,7 +47,8 @@ if [ -n "${INSTALL_MINIO}" ]; then
 fi
 
 # Flux client
-curl -s https://fluxcd.io/install.sh | sudo bash
+FLUX_CLI_VERSION="2.4.0"
+curl -s https://fluxcd.io/install.sh | sudo FLUX_VERSION=${FLUX_CLI_VERSION} bash
 # Autocompletion
 . <(flux completion bash)