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/test679

@@ -44,13 +44,13 @@ machine %HOSTIP login user1 password "with spaces and \"\n\r\t\a"
 #
 # Verify data after the test has been "shot"
 <verify>
-<protocol>
-GET / HTTP/1.1
-Host: %HOSTIP:%HTTPPORT
-Authorization: Basic %b64[user1:with%20spaces%20and%20"%0a%0d%09a]b64%
-User-Agent: curl/%VERSION
-Accept: */*
-
+<protocol crlf="yes">
+GET / HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Authorization: Basic %b64[user1:with%20spaces%20and%20"%0a%0d%09a]b64%
+User-Agent: curl/%VERSION
+Accept: */*
+
 </protocol>
 </verify>
 </testcase>