Do not setup GARDEN_ROOTFS_DRIVER, just provide sane defaults

Eirini doesn't care about the Garden setting, prefer overlay-xfs for
default as it is more compatible.

Fixes #99

Author: mudler

modules/scf/defaults.sh

@@ -11,7 +11,7 @@ SCF_HELM_VERSION="${SCF_HELM_VERSION:-}"
 SCF_OPERATOR="${SCF_OPERATOR:-false}"
 OPERATOR_CHART_URL="${OPERATOR_CHART_URL:-latest}"
 
-GARDEN_ROOTFS_DRIVER="${GARDEN_ROOTFS_DRIVER:-btrfs}"
+GARDEN_ROOTFS_DRIVER="${GARDEN_ROOTFS_DRIVER:-overlay-xfs}"
 DIEGO_SIZING="${DIEGO_SIZING:-$SIZING}"
 STORAGECLASS="${STORAGECLASS:-persistent}"
 AUTOSCALER="${AUTOSCALER:-false}"

modules/scf/gen_config.sh

@@ -10,10 +10,6 @@ if [ "${DEFAULT_STACK}" = "from_chart" ]; then
     export DEFAULT_STACK=$(helm inspect helm/cf/ | grep DEFAULT_STACK | sed  's~DEFAULT_STACK:~~g' | sed 's~"~~g' | sed 's~\s~~g')
 fi
 
-if [ "$ENABLE_EIRINI" = false ]; then
-  GARDEN_ROOTFS_DRIVER="${GARDEN_ROOTFS_DRIVER:-overlay-xfs}"
-fi
-
 domain=$(kubectl get configmap -n kube-system cap-values -o json | jq -r '.data["domain"]')
 public_ip=$(kubectl get configmap -n kube-system cap-values -o json | jq -r '.data["public-ip"]')
 aux_external_ips=($(kubectl get nodes -o json | jq -r '.items[].status.addresses[] | select(.type == "InternalIP").address'))