Unable to use a custom oncall_url

We have Grafana Cloud in EU West (Belgium) region. When trying to apply a crossplane resource (for example, EscalationChain), there is an error:

Message: apply failed: POST https://oncall-prod-us-central-0.grafana.net/oncall/api/v1/escalation_chains/: 403 {detail: Invalid token.} - the region in the url is the default one.

With terraform we specify oncall_url (https://registry.terraform.io/providers/grafana/grafana/latest/docs#oncall_url) in the provider configuration, like this:

provider "grafana" {
  oncall_url = "https://oncall-prod-eu-west-0.grafana.net/oncall/"
  oncall_access_token = "***************************"
}

but adding it to provider credentials has no effect, it seems it's missed from this list:

crossplane-provider-grafana/internal/clients/grafana.go

Lines 68 to 76 in 6b5bc0a

    
           for _, k := range []string{ 
        
           	"url", 
        
           	"auth", 
        
           	"cloud_api_key", 
        
           	"cloud_api_url", 
        
           	"oncall_access_token", 
        
           	"sm_access_token", 
        
           	"sm_url", 
        
           } {

Is there any workaround to specify a non-default region oncall url?

Feel free to open a PR to add it to the list you linked above, I'll be happy to do a release

@julienduchesne sure, please take a look: #21

	for _, k := range []string{
	"url",
	"auth",
	"cloud_api_key",
	"cloud_api_url",
	"oncall_access_token",
	"sm_access_token",
	"sm_url",
	} {