test-webraw: do not store hostname in test output

tests/test-webraw

@@ -17,4 +17,5 b' sleep 5'
 kill `cat hg.pid`
 sleep 1 # wait for server to scream and die
 cat getoutput.txt
-cat access.log error.log | sed 's/^\([^[]*\[\)[^]]*\(\].*\)$/\1date\2/g'
+cat access.log error.log | \
+  sed 's/^[^ ]*\( [^[]*\[\)[^]]*\(\].*\)$/host\1date\2/'

tests/test-webraw.out

@@ -7,4 +7,4 b' This is just some random text'
 that will go inside the file and take a few lines.
 It is very boring to read, but computers don't
 care about things like that.
-localhost - - [date] "GET /?f=f165dc289438;file=sometext.txt;style=raw HTTP/1.1" 200 -
+host - - [date] "GET /?f=f165dc289438;file=sometext.txt;style=raw HTTP/1.1" 200 -