[2.x] Influx generating invalid/broken config for vCenter

[RyanHakurei]

Steps to reproduce:

1. Open the Create Configuration wizard
2. Choose vCenter
3. Edit the default config for server and auth info

Expected behaviour:
A valid config file

Actual behaviour:
There's an errant dash that breaks the config. This dash exists in the default config file that is generated when you go through the wizard.

Environment info:

Docker

Config:

-# Read metrics from one or many vCenters
[[inputs.vsphere]]
  ## List of vCenter URLs to be monitored. These three lines must be uncommented
  ## and edited for the plugin to work.
  vcenters = [ "https://vcenter.local/sdk" ]
  username = "user@corp.local"
  password = "secret"

The errant dash on that first like is what breaks the config, and it exists by default in the config file. Manually removing it fixes the file.

Logs:

There are no logs, but the context can be found here

[philjb]

@srebhan -- the sample configs for generating telegraf configs in the ui come from the ui repo: https://github.com/influxdata/ui/tree/master/src/writeData/components/telegrafInputPluginsConfigurationText

Influxdb 2.x also contains a set of sample configs for telegraf: https://github.com/influxdata/influxdb/blob/main-2.x/telegraf/plugins/plugins.go which support the /api/v2/telegraf/plugins api. I don't know if that api does anything.

It should be an easy pr to the ui repo to remove the dash but you might want to double check the sample telegraf configs in the ui: I bet it's missing many of the newer plugins.

[srebhan]

@philjb where do those configs come from?

[philjb]

Sven and i discussed in slack: looks like these are the instructions for updating the configs: https://github.com/influxdata/ui/tree/master/src/writeData/utils#readme