fix(azure-connection): Resources using client secret must be updated following export

With this change, the user will be notified that the client secret must be updated before the resource can be applied. When exported, the resource will be placed in the `.requires_attention` directory.

Author: arthurpitman

dynatrace/api/builtin/hyperscalerauthentication/connections/azure/settings/settings.go

@@ -106,3 +106,12 @@ func (me *Settings) UnmarshalHCL(decoder hcl.Decoder) error {
 		"type":                          &me.Type,
 	})
 }
+
+func (me *Settings) FillDemoValues() []string {
+	// connections using client secret authentication must be modified before use
+	if me.Type == Types.Clientsecret && me.ClientSecret != nil {
+		me.ClientSecret.ClientSecret = "#######"
+		return []string{"Please fill in the client secret"}
+	}
+	return []string{}
+}