fix https://github.com/Neilpang/acme.sh/issues/593

dnsapi/dns_aws.sh

@@ -93,7 +93,7 @@ _get_root() {
       fi
 
       if _contains "$response" "<Name>$h.</Name>"; then
-        hostedzone="$(echo "$response" | _egrep_o "<HostedZone><Id>[^<]*<.Id><Name>$h.<.Name>.*<.HostedZone>")"
+        hostedzone="$(echo "$response" | sed 's/<HostedZone>/#&/g' | tr '#' '\n' | _egrep_o "<HostedZone><Id>[^<]*<.Id><Name>$h.<.Name>.*<.HostedZone>")"
         _debug hostedzone "$hostedzone"
         if [ -z "$hostedzone" ]; then
           _err "Error, can not get hostedzone."