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/test1012

@@ -56,21 +56,21 @@ http://%HOSTIP:%HTTPPORT/blah/%TESTNUMBER -L -d "moo" --post301
 #
 # Verify data after the test has been "shot"
 <verify>
-<protocol nonewline="yes">
-POST /blah/%TESTNUMBER HTTP/1.1
-Host: %HOSTIP:%HTTPPORT
-User-Agent: curl/%VERSION
-Accept: */*
-Content-Length: 3
-Content-Type: application/x-www-form-urlencoded
-
-mooPOST /blah/moo.html&testcase=/%TESTNUMBER0002 HTTP/1.1
-Host: %HOSTIP:%HTTPPORT
-User-Agent: curl/%VERSION
-Accept: */*
-Content-Length: 3
-Content-Type: application/x-www-form-urlencoded
-
+<protocol crlf="yes" nonewline="yes">
+POST /blah/%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+User-Agent: curl/%VERSION
+Accept: */*
+Content-Length: 3
+Content-Type: application/x-www-form-urlencoded
+
+mooPOST /blah/moo.html&testcase=/%TESTNUMBER0002 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+User-Agent: curl/%VERSION
+Accept: */*
+Content-Length: 3
+Content-Type: application/x-www-form-urlencoded
+
 moo
 </protocol>
 </verify>