test: add rpc_fundrawtransaction logging
test: add rpc_fundrawtransaction logging

Summary:
> test/functional/rpc_fundrawtransaction.py is fairly long to run and has no logging, so it can appear to be stalled.
>
> This commit adds info logging at each test to provide feedback on the test run.

This is a backport of Core [[https://github.com/bitcoin/bitcoin/pull/17342 | PR17342]] [1/2]
https://github.com/bitcoin/bitcoin/pull/17327/commits/94fcc08541cf58bee864ab7c28a6c77e42472f17

Test Plan:
`ninja && test/functional/test_runner.py rpc_fundr*`

While the test is running, in another terminal:
`tail -f test/tmp/test_runner_₿₵_🏃_20201102_112740/rpc_fundrawtransaction_475/test_framework.log`

Reviewers: O1 Bitcoin ABC, #bitcoin_abc, jasonbcox

Reviewed By: O1 Bitcoin ABC, #bitcoin_abc, jasonbcox

Differential Revision: https://reviews.bitcoinabc.org/D8234

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