CfEnv directly here as we need to set the
spring.config.import property before the
ConfigDataEnvironmentPostProcessor runs java-cfenv-boot library's
EnvironmentPostProcessor runs after the ConfigDataEnvironmentPostProcessor,
intentionallyCfEnv directly as a BootstrapRegistryInitializer is required to
setup the RestTemplate that calls config-server.ClientHttpRequestInterceptor implementation to add authorization header to
request based on an OAuth2AuthorizedClient.