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/test2049

@@ -38,27 +38,27 @@ http://www1.example.com:8081/%TESTNUMBER --connect-to ::%HOSTIP:%HTTPPORT --next
 #
 # Verify data after the test has been "shot"
 <verify>
-<protocol>
-GET /%TESTNUMBER HTTP/1.1
-Host: www1.example.com:8081
-User-Agent: curl/%VERSION
-Accept: */*
-
-GET /%TESTNUMBER HTTP/1.1
-Host: www2.example.com:8082
-User-Agent: curl/%VERSION
-Accept: */*
-
-GET /%TESTNUMBER HTTP/1.1
-Host: www3.example.com:8083
-User-Agent: curl/%VERSION
-Accept: */*
-
-GET /%TESTNUMBER HTTP/1.1
-Host: www4.example.com:8084
-User-Agent: curl/%VERSION
-Accept: */*
-
+<protocol crlf="yes">
+GET /%TESTNUMBER HTTP/1.1
+Host: www1.example.com:8081
+User-Agent: curl/%VERSION
+Accept: */*
+
+GET /%TESTNUMBER HTTP/1.1
+Host: www2.example.com:8082
+User-Agent: curl/%VERSION
+Accept: */*
+
+GET /%TESTNUMBER HTTP/1.1
+Host: www3.example.com:8083
+User-Agent: curl/%VERSION
+Accept: */*
+
+GET /%TESTNUMBER HTTP/1.1
+Host: www4.example.com:8084
+User-Agent: curl/%VERSION
+Accept: */*
+
 </protocol>
 
 </verify>