Fix an ivanx.com that should be hardcoded

Overzealous replacement of hardcoded ivanx.com with script variable.
The A2CLOUD disk image should be downloaded right off Ivan's server
because we don't have it in the git repository.

scripts/a2server-5-netboot.txt

@@ -378,7 +378,7 @@ if [[ ! $autoAnswerYes || -f /tmp/a2server-setupNetBoot ]]; then
                 mkdir -p $zlinkDir/.AppleDouble
                 echo
                 cd /tmp/netboot
-                wget -qO A2CLOUD.HDV "${scriptURL}files/A2CLOUD.HDV"
+                wget -qO A2CLOUD.HDV "http://ivanx.com/a2server/files/A2CLOUD.HDV"
                 cppo -ad A2CLOUD.HDV . > /dev/null
                 cd A2CLOUD
                 mv *PT3* *PROTERM* $protermDir