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/test1702

@@ -49,12 +49,12 @@ http://%HOSTIP:%HTTP2PORT/%TESTNUMBER --http2 --head
 ^X-Forwarded-Proto:.*
 ^Via:.*
 </strip>
-<protocol>
-HEAD /%TESTNUMBER HTTP/1.1
-Host: %HOSTIP:%HTTP2PORT
-User-Agent: curl/%VERSION
-Accept: */*
-
+<protocol crlf="yes">
+HEAD /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTP2PORT
+User-Agent: curl/%VERSION
+Accept: */*
+
 </protocol>
 <stdout>
 HTTP/1.1 101 Switching Protocols