Fixes the following ansible-lint warnings:
yaml[indentation]: Wrong indentation: expected 6 but found 4
roles/nfs-host/tasks/main.yml:6
yaml[indentation]: Wrong indentation: expected 6 but found 4
roles/nginx_https_ingress/tasks/main.yml:11
yaml[indentation]: Wrong indentation: expected 6 but found 4
roles/nginx_https_ingress/tasks/main.yml:48