add script for cilium installation

scripts/1.install_cilium.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -e
+
+sudo ip link delete cilium_host || true && \
+sudo ip link delete cilium_net || true && \
+sudo ip link delete cilium_vxlan || true && \
+helm repo add cilium https://helm.cilium.io || echo "Cilium repo already exists" && \
+helm repo update || echo "Failed to update helm repos" && \
+kubectl create namespace cilium || echo "Namespace cilium already exists" && \
+helm install cilium cilium/cilium --version 1.15.6 \
+  --namespace kube-system \
+  --set operator.replicas=1
+