The threee tags `<name>`, `</name>` and `<command>` were frequently used
with a leading space that this removes. The reason this habbit is so
widespread in testcases is probably that they have been copy and pasted.
Hence, fixing them all now might curb this practice from now on.
Closes#12028
"Active FTP hangs if server does not open data connection"
The server first sends a 150 and then when libcurl waits for the data
transfer, the server sends a 425.
