Cannot get cloudflared to work with a self signed cert

I'm running `cloudflare/cloudflared:2021.4.0` with this configuration:

```
tunnel: web

no-autoupdate: true
metrics: 0.0.0.0:8099
no-tls-verify: true

ingress:
- hostname: unifi.redacted.com
service: https://unifi:8443
originRequest:
noTLSVerify: true
```

Neither way of specifying `no-tls-verify` works:

```
root@nas:/zfs/docker/appdata# docker logs -f cloudflared-f0da00cd-a5b7-36c4-69e3-dc7575b030b2
2021-04-21T21:20:30Z INF Starting tunnel tunnelID=
2021-04-21T21:20:30Z INF Version
2021-04-21T21:20:30Z INF GOOS: linux, GOVersion: go1.15.7, GoArch: amd64
2021-04-21T21:20:30Z INF Settings: map[metrics:0.0.0.0:8099 no-autoupdate:true no-tls-verify:true]
2021-04-21T21:20:30Z INF Generated Connector ID:
2021-04-21T21:20:30Z INF Initial protocol h2mux
2021-04-21T21:20:30Z INF Starting metrics server on [::]:8099/metrics
2021-04-21T21:20:30Z INF Connection registered connIndex=0 location=SJC
2021-04-21T21:20:30Z INF Connection registered connIndex=1 location=LAX
2021-04-21T21:20:31Z INF Connection registered connIndex=2 location=SJC
2021-04-21T21:20:32Z INF Connection registered connIndex=3 location=LAX
2021-04-21T21:21:40Z ERR CF-RAY: -LAX Proxying to ingress 0 error: Error proxying request to origin: x509: certificate signed by unknown authority
```

Why is it still complaining about an unknown authority? Shouldn't it be ignoring it?