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
- Test 973 redirects from HTTP to FTP, clear auth
- Test 974 redirects from HTTP to HTTP different port, clear auth
- Test 975 redirects from HTTP to FTP, permitted to keep auth
- Test 976 redirects from HTTP to HTTP different port, permitted to keep
auth