Add a preseed file that does not harcode the codename

That way d-i will automatically pick the release that has been
selected during the build of the live image.

config/includes.installer/preseed.cfg

@@ -0,0 +1,30 @@
+# Default repository information (don't include codename data, d-i figures it
+# out from what's available in the ISO)
+d-i mirror/country string enter information manually
+d-i mirror/http/hostname string http.kali.org
+d-i mirror/http/directory string /kali
+d-i apt-setup/security_host string security.kali.org
+
+# Disable volatile and backports
+d-i apt-setup/services-select multiselect security
+
+# Enable contrib and non-free
+d-i apt-setup/non-free boolean true
+d-i apt-setup/contrib boolean true
+
+# Disable CDROM entries after install
+d-i apt-setup/disable-cdrom-entries boolean true
+
+# Upgrade installed packages
+d-i pkgsel/upgrade select full-upgrade
+
+# Change default hostname
+# DISABLED: We take care of this by forking netcfg until #719101 is fixed
+# d-i netcfg/get_hostname string kali
+# d-i netcfg/get_hostname seen false
+
+# Do not create a normal user account
+d-i passwd/make-user boolean false
+
+# Disable popularity-contest
+popularity-contest popularity-contest/participate boolean false