Remove tool_version key/value pairs from tests #296

[johnmhoran]

Reference: #296

I've used from scancode import cli_test_utils -- e.g., cli_test_utils.streamline_headers(output_data["headers"]) -- to remove the tool_version key/value pair from expected and actual test data and removed tests that checked the tool_version.

[johnmhoran]

@pombredanne I have more work to do on the validate and versions code and tests (and one more test for urls) and plan to open a new branch for that work -- treating this PR, branch and issue as free-standing so we can address the dynamic test tool_version values right away. Please let me know if you'd prefer that I also use this branch and PR for that upcoming code/test work.

[pombredanne]

Thanks. You should copy cli_test_utils.py here instead.
ScanCode is not a dep of this toolkit (and we do not want it to be such a dep for now)
We likely will need to adjust the tests so they run in isolation from the main purldb code.

[johnmhoran]

@pombredanne I've copied cli_test_utils.py from ScanCode to purldb_toolkit; all GH checks have passed (and all 76 local purlcli tests passed as well). Do you want to treat this as a free-standing issue/PR and merge when ready (my suggestion), or shall I use this for my ongoing purlcli code/test work?

[johnmhoran]

LGTM ;-) Merging.