Remove spaces in the applications string

[jadolg]

The list of applications needs to be supplied as comma-separated strings.
Including spaces breaks the process.
This change should ensure no spaces are passed to the API.

In the current version, this example:

resource "civo_kubernetes_cluster" "civo001" {
  applications = "metrics-server, traefik2-nodeport, prometheus-operator"
  name         = "civo001"
  firewall_id  = civo_firewall.civo001.id
  cluster_type = "talos"
  pools {
    size       = "g4s.kube.medium"
    node_count = 3
  }
}

produces the following error:
Error: [ERR] failed to create the kubernetes cluster: Error: Unknown error response - status: 404 Not Found, code: 404, reason: {"code":"database_kubernetes_aplication_not_found","reason":"Failed to find the Kubernetes application for installation"}

Removing the spaces in the applications field takes care of the error.