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/test408

@@ -40,19 +40,19 @@ Moooooooooooo
 ^PORT \d{1,3},\d{1,3},\d{1,3},\d{1,3},\d{1,3},\d{1,3}
 ^EPRT \|1\|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\|\d{1,5}\|
 </strip>
-<protocol>
-USER anonymous
-PASS ftp@example.com
-PBSZ 0
-PROT C
-PWD
-CWD CWD
-CWD STOR
-CWD RETR
-PORT 127,0,0,1,5,109
-TYPE I
-STOR %TESTNUMBER
-QUIT
+<protocol crlf="yes">
+USER anonymous
+PASS ftp@example.com
+PBSZ 0
+PROT C
+PWD
+CWD CWD
+CWD STOR
+CWD RETR
+PORT 127,0,0,1,5,109
+TYPE I
+STOR %TESTNUMBER
+QUIT
 </protocol>
 <upload>
 Moooooooooooo