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/test549

@@ -49,12 +49,12 @@ ftp://www.example.com/moo/%TESTNUMBER http://%HOSTIP:%HTTPPORT
 #
 # Verify data after the test has been "shot"
 <verify>
-<protocol>
-GET ftp://www.example.com/moo/%TESTNUMBER;type=i HTTP/1.1
-Host: www.example.com:21
-Accept: */*
-Proxy-Connection: Keep-Alive
-
+<protocol crlf="yes">
+GET ftp://www.example.com/moo/%TESTNUMBER;type=i HTTP/1.1
+Host: www.example.com:21
+Accept: */*
+Proxy-Connection: Keep-Alive
+
 </protocol>
 <stdout>
 hello