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 319 checks proper raw mode data with non-chunked gzip
transfer-encoded server data.
Test 326 checks raw mode with chunked server data.
Bug: #2303Closes#2308