Added logic to get K8S_IP from ingress-nginx-controller

# timestap to use along scripts

export timestamp=$(date +"%Y%m%d_%H%M%S")

# k8s public ip

export K8S_IP="127.0.0.1"

# k8s public ip. NONE will indicate no local register service DNS resolution to reach CCF, empty value will try to get ip of ingress-nginx-controller NodePort

# and any other vaule will set resolution to K8S_IP set for CAPIF_HOSTNAME.

export K8S_IP=""

# Directories variables setup (no modification needed)

export SCRIPTS_DIR=$(dirname "$(readlink -f "$0")")

# Vault installation variables

## Vault configuration

export VAULT_HOSTNAME=vault.testbed.int

export VAULT_HOSTNAME=vault.testbed.develop

export VAULT_NAMESPACE=ocf-vault

export VAULT_SERVICE_NAME='vault'

export LABEL_TO_CHECK="app.kubernetes.io/name"

# Monitoring installation variables

## Prometheus Hostname to be used at ingress configuration

export PROMETHEUS_HOSTNAME=prometheus.ocf.int

export PROMETHEUS_HOSTNAME=prometheus.testbed.develop

export MONITORING_NAMESPACE=monitoring

export MONITORING_SERVICE_NAME=monitoring

# OpenCAPIF deployment variables

## Register and Capif hostname to be deployed

export CAPIF_HOSTNAME="capif.6gsandbox.uma.internal"

export REGISTER_HOSTNAME="register.6gsandbox.uma.internal"

export CAPIF_HOSTNAME="capif.testbed.develop"

export REGISTER_HOSTNAME="register.testbed.develop"

## namespace to use

export CAPIF_NAMESPACE=ocf-capif

## version to be used on deployment

### this configuration is used to add this script to ocf-mon-$CAPIF_CI_ENV_ENDPOINT.$CAPIF_DOMAIN mock-server-$CAPIF_CI_ENV_ENDPOINT.$CAPIF_DOMAIN mongo-express-register-$CAPIF_CI_ENV_ENDPOINT.$CAPIF_DOMAIN mongo-express-$CAPIF_CI_ENV_ENDPOINT.$CAPIF_DOMAIN

export CAPIF_CI_ENV_ENDPOINT=capif

### Domain to ve used in grafana, mock-server and both mongo express instances.

export CAPIF_DOMAIN=uma.internal

export CAPIF_DOMAIN=testbed.develop

## Configuration of images to be used on deplyment

### Docker Registry to download images (must be accesible by k8s cluster)

export CAPIF_DOCKER_REGISTRY="labs.etsi.org:5050/ocf/capif/prod"

    echo "$VAULT_FILE not exists or content is empty."

fi

echo "Using value on VAULT_ACCESS_TOKEN=$VAULT_ACCESS_TOKEN"

### If K8S_IP is empty, then script will try to get ingress-nginx-controller NodePort to grant DNS resolution for register to connect locally to CAPIF nginx

if [ "$K8S_IP" == "NONE" ]; then

    echo "K8S_IP value is NONE. Register service will not have local DNS resolution"

elif [ -z "$K8S_IP" ]; then

    K8S_IP=$(kubectl $KUBECONFIG get svc -A | grep ingress-nginx-controller | awk '/NodePort/{ print $4 }')

    echo "K8S_IP value will be $K8S_IP"

fi