tests: remove leading spaces from some tags

The threee tags `<name>`, `</name>` and `<command>` were frequently used
with a leading space that this removes. The reason this habbit is so

tests: remove leading spaces from some tags

The threee tags `<name>`, `</name>` and `<command>` were frequently used
with a leading space that this removes. The reason this habbit is so
widespread in testcases is probably that they have been copy and pasted.

Hence, fixing them all now might curb this practice from now on.

Closes #12028

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tests: use %LOGDIR to refer to the log directory

This will allow it be set dynamically.

Ref: #10818

tool_operate: Fix error codes on bad URL & OOM

curl would erroneously report CURLE_OUT_OF_MEMORY in some cases instead
of CURLE_URL_MALFORMAT. In other cases, it would erroneously return

tool_operate: Fix error codes on bad URL & OOM

curl would erroneously report CURLE_OUT_OF_MEMORY in some cases instead
of CURLE_URL_MALFORMAT. In other cases, it would erroneously return
CURLE_URL_MALFORMAT instead of CURLE_OUT_OF_MEMORY. Add a test case to
test the former condition.

Fixes #10130
Closes #10414

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