feat: add Ingress and Service configurations for nginx deployment, and implement MetalLB and Traeik installation scripts

refactor: remove obsolete Traefik installation script

feat: add environment checks and configurations for Vagrant setup, including dnsmasq  MetalLB  and ingress

vagrant/dev/ubuntu/scripts/install_metallb.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+
+
+source /vagrant/.envrc
+
+# Check if MetalLB is already installed by looking for the controller deployment
+if ! kubectl get deployment -n metallb-system controller &>/dev/null; then
+  echo "Installing MetalLB..."
+  kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/main/config/manifests/metallb-native.yaml
+  if [ $? -ne 0 ]; then
+    echo "Fatal: Failed to apply MetalLB manifest." >&2
+    exit 1
+  fi
+  
+  # Wait for MetalLB components to be ready
+  echo "Waiting for MetalLB components to be ready..."
+  kubectl wait --namespace metallb-system \
+    --for=condition=ready pod \
+    --selector=app=metallb \
+    --timeout=90s
+
+else
+  echo "MetalLB is already installed."
+fi
+
+# Wait for the webhook service to be ready
+echo "Waiting for MetalLB webhook service to be ready..."
+kubectl wait --namespace metallb-system \
+  --for=condition=ready pod \
+  --selector=component=webhook \
+  --timeout=90s
+
+# Check if the IPAddressPool already exists
+if ! kubectl get ipaddresspool -n metallb-system default &>/dev/null; then
+  echo "Creating MetalLB IPAddressPool..."
+  cat <<EOF | kubectl apply -f -
+apiVersion: metallb.io/v1beta1
+kind: IPAddressPool
+metadata:
+  name: default
+  namespace: metallb-system
+spec:
+  addresses:
+  - ${METALLB_IP_RANGE}
+EOF
+else
+  echo "MetalLB IPAddressPool already exists."
+fi
+
+# Check if the L2Advertisement already exists
+if ! kubectl get l2advertisement -n metallb-system default &>/dev/null; then
+  echo "Creating MetalLB L2Advertisement..."
+  cat <<EOF | kubectl apply -f -
+apiVersion: metallb.io/v1beta1
+kind: L2Advertisement
+metadata:
+  name: default
+  namespace: metallb-system
+spec:
+  ipAddressPools:
+  - default
+EOF
+else
+  echo "MetalLB L2Advertisement already exists."
+fi