tests: sync feature names with `curl -V`

Some feature names used in tests had minor differences compared to
the well-known ones from `curl -V`. This patch syncs them to make test
res

tests: sync feature names with `curl -V`

Some feature names used in tests had minor differences compared to
the well-known ones from `curl -V`. This patch syncs them to make test
results easier to grok.

Closes #14183

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http_aws_sigv4: canonicalise valueless query params

Fixes #8107
Closes #12244

aws_sigv4: the query canon code miscounted URL encoded input

Added some extra ampersands to test 439 to verify "blank" query parts

Follow-up to fc76a24c53b08cdf

Closes #118

aws_sigv4: the query canon code miscounted URL encoded input

Added some extra ampersands to test 439 to verify "blank" query parts

Follow-up to fc76a24c53b08cdf

Closes #11829

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test439: verify query canonization for aws-sigv4