The graph node types related to resources and resource instances use a
bunch of helper functions in different combinations, rather than calling
directly into the provider API.
This commit plumbs context.Context through to the functions that _do_
eventually call methods directly on the provider object, leaving us just
one more step away from plumbing the context through to the actual gRPC
calls. The next step (in a future commit) will be to update the
providers.Interface methods to take context.Context arguments and then
have the gRPC-based implementations of that interface pass the context
through to the gRPC client stub calls, and then we should be pretty close
to being able to turn on OTel tracing instrumentation for our gRPC
client requests.
Signed-off-by: Martin Atkins <mart@degeneration.co.uk>
098d23ecdf