when using the providers.d method of installation users could hand craft their AdapterSpec's to use overlapping code meaning one repo could contain an inline
and remote impl. Currently installing a provider via module does not allow for that as each repo is only allowed to have one `get_provider_spec` method with one Spec returned
add an optional way for `get_provider_spec` to return a list of `ProviderSpec` where each can be either an inline or remote impl.
Note: the `adapter_type` in `get_provider_spec` MUST match the `provider_type` in the build/run yaml for this to work.
resolves#3226
Signed-off-by: Charlie Doern <cdoern@redhat.com>
92d0470f74