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/test580

@@ -53,11 +53,11 @@ http://%HOSTIP:%HTTPPORT/%TESTNUMBER
 
 # Verify data after the test has been "shot"
 <verify>
-<protocol>
-GET /%TESTNUMBER HTTP/1.1
-Host: %HOSTIP:%HTTPPORT
-Accept: */*
-
+<protocol crlf="yes">
+GET /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+
 </protocol>
 <errorcode>
 8