EnvironmentPostProcessor that configures the context environment by loading
properties from well known file locations. By default properties will be loaded from
'application.properties' and/or 'application.yml' files in the following locations:
Set the search locations that will be considered as a comma-separated list. Each
search location should be a directory path (ending in "/") and it will be prefixed
by the file names constructed from search names and
profiles (if any) plus file extensions supported by the properties loaders.
Locations are considered in the order specified, with later items taking precedence
(like a map merge).