WPB-6524 Added optional api proxy attribute to deeplink json in nginz chart

[battermann]

https://wearezeta.atlassian.net/browse/WPB-6524

Test like this:

cd into charts

create file nginz-overrides.yaml

echo 'nginx_conf:
  deeplink:
    endpoints:
      backendURL: "https://prod-nginz-https.wire.com"
      backendWSURL: "https://prod-nginz-ssl.wire.com"
      blackListURL: "https://clientblacklist.wire.com/prod"
      teamsURL: "https://teams.wire.com"
      accountsURL: "https://accounts.wire.com"
      websiteURL: "https://wire.com"
    title: "Leif Test"
    apiProxy: # (optional)
      host: "socks5.proxy.com"
      port: 1080
      needsAuthentication: true' > nginz-overrides.yaml

create file nginz-secrets.yaml

echo 'secrets:
  basicAuth: "whatever"
  zAuth:
    # this must match the key in brig!
    publicKeys: 0UW38se1yeoc5bVNEvf5LyrHWGZkyvcGTVilK2geGdU=
  oAuth:
    publicKeys: |
      {
        "kty": "OKP",
        "crv": "Ed25519",
        "x": "mhP-NgFw3ifIXGZqJVB0kemt9L3BtD5P8q4Gah4Iklc"
      }' > nginz-secrets.yaml

run

helm template --debug -f nginz-secrets.yaml -f nginz-overrides.yaml ./nginz

produces:

...
  deeplink.json: |2    
    
    {
      "endpoints" : {
          "backendURL" : "https://prod-nginz-https.wire.com",
          "backendWSURL": "https://prod-nginz-ssl.wire.com",
          "blackListURL": "https://clientblacklist.wire.com/prod",
          "teamsURL": "https://teams.wire.com",
          "accountsURL": "https://accounts.wire.com",
          "websiteURL": "https://wire.com"
       },
       "apiProxy" : {
          "host" : "socks5.proxy.com",
          "port" : 1080,
          "needsAuthentication" : true
       },
       "title" : "Leif Test"
    }
...

Checklist

• Test with helm template
• Add a new entry in an appropriate subdirectory of changelog.d
• Read and follow the PR guidelines