tests: use crlf=yes attribute more

To make special newlines more explicit and visible.
Mostly in `<protocol>` sections, some in `<data*>` and `<upload>`.

Reducing the number of `tests/data/test*`:
- CRLF newlines from 21535 to 11337.
- files with mixed newlines from 1335 to 707.

Also delete empty `<protocol>` sections.

Closes #19284

tests/data/test385

@@ -42,14 +42,14 @@ HTTP with --json x 2
 #
 # Verify data after the test has been "shot"
 <verify>
-<protocol nonewline="yes">
-POST /%TESTNUMBER HTTP/1.1
-Host: %HOSTIP:%HTTPPORT
-User-Agent: curl/%VERSION
-Content-Type: drinks/hot
-Accept: application/json
-Content-Length: 41
-
+<protocol crlf="yes" nonewline="yes">
+POST /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+User-Agent: curl/%VERSION
+Content-Type: drinks/hot
+Accept: application/json
+Content-Length: 41
+
 { "drink": "coffee", "crunch": "cookie" }
 </protocol>
 </verify>