chore: turn off ingress in subcharts by default

By default, gitlab would deploy 2 ingress resources for NGINX. Since we want ingress turned off by default in Gitlab, I added 2 values to cover the subcharts that were causing the deployments. The global setting is not used when a local setting is available. And each of the subcharts had a local setting for ingress.enabled

Closes #20 (closed)