add flux version check to install script

install/flux-version-check.sh

+if [ "$(flux --version)" != "flux version 0.14.2" ]; then
+    echo "The OpenAppStack installation only works with Flux version 0.14.2"
+    exit 1;
+fi

install/install-nextcloud.sh

@@ -2,6 +2,8 @@
 
 set -euo pipefail
 
+bash $(dirname "$0")/flux-version-check.sh
+
 # This kustomization's only purpose is to add the kustomization that is in the
 # flxu2/cluster/optional/nextcloud folder. After this kustomization is applied
 # an `add-nextcloud` kustomization will be present on the cluster, as well as a

install/install-openappstack.sh

@@ -2,6 +2,8 @@
 
 set -euo pipefail
 
+bash $(dirname "$0")/flux-version-check.sh
+
 flux install \
   --network-policy=false \
   --watch-all-namespaces=true \

install/install-rocketchat.sh

@@ -2,6 +2,8 @@
 
 set -euo pipefail
 
+bash $(dirname "$0")/flux-version-check.sh
+
 # This kustomization's only purpose is to add the kustomization that is in the
 # flxu2/cluster/optional/rocketchat folder. After this kustomization is applied
 # an `add-rocketchat` kustomization will be present on the cluster, as well as a

install/install-velero.sh

@@ -2,6 +2,8 @@
 
 set -euo pipefail
 
+bash $(dirname "$0")/flux-version-check.sh
+
 # This kustomization's only purpose is to add the kustomization that is in the
 # flxu2/cluster/optional/velero folder. After this kustomization is applied
 # an `add-velero` kustomization will be present on the cluster, as well as a

install/install-wordpress.sh

@@ -2,6 +2,8 @@
 
 set -euo pipefail
 
+bash $(dirname "$0")/flux-version-check.sh
+
 # This kustomization's only purpose is to add the kustomization that is in the
 # flxu2/cluster/optional/wordpress folder. After this kustomization is applied
 # an `add-wordpress` kustomization will be present on the cluster, as well as a