Fix unsupported regex in ingress-nginx config

[eschwartz]

Context

The ingress component failed to deploy when running make deploy, with:

W0313 14:22:12.722815 31494 warnings.go:70] path /(/|$) cannot be used with pathType Prefix Error: 1 error occurred: * admission webhook "validate.nginx.ingress.kubernetes.io" denied the request: ingress contains invalid paths: path /raster(/|$)(.) cannot be used with pathType Prefix path /stac(/|$)(.) cannot be used with pathType Prefix path /vector(/|$)(.*) cannot be used with pathType Prefix path /(/|$) cannot be used with pathType Prefix

Changing the type to ImplementationSpecific fixes the error, and the app seems to function as expected

This was after following the GKE setup instructions. I'm guessing there is a newer version of the NGINX Ingress controller that is causing this error.

What I am changing

• Change the pathType for Ingress rules to ImplementationSpecific
  • See ingress-nginx controller docs on using regex in paths

How I did it

• I ran through the GCP SKE setup instructions in this repo, then run make deploy.
  • The command failed, and the services were not available via my GKE cluster

How you can test it

• Run through the GCP SKE setup instructions in this repo, then run make deploy.
  • The command succeeded, and I was able to access all the services via the GKE cluster public IP