Add Debian (#11)

* Add Debian

Add work for Debian 9, 10, 11 - which are the only ones still under
maintenance at this time

* Remove Virtualbox ISO file after install

* Fix Ubuntu 18.04 virtualbox

distros/debian-10-x86_64.pkrvars.hcl

@@ -0,0 +1,16 @@
+distro = "debian"
+version = "10"
+iso = {
+	url = "https://cdimage.debian.org/cdimage/archive/10.11.0/amd64/iso-cd/debian-10.11.0-amd64-netinst.iso"
+	checksum = "133430141272d8bf96cfb10b6bfd1c945f5a59ea0efc2bcb56d1033c7f2866ea"
+}
+boot_command = [
+	"<esc><wait>",
+	"auto ",
+	"DEBIAN_FRONTEND=text ",
+	"net.ifnames=0 ",
+	"biosdevnames=0 ",
+	"preseed/url=http://{{.HTTPIP}}:{{ .HTTPPort }}/debian/10-preseed.cfg ",
+	"console=ttyS0 ",
+	"<enter>"
+]

distros/debian-11-x86_64.pkrvars.hcl

@@ -0,0 +1,16 @@
+distro = "debian"
+version = "11"
+iso = {
+	url = "https://cdimage.debian.org/cdimage/archive/11.2.0/amd64/iso-cd/debian-11.2.0-amd64-netinst.iso"
+	checksum = "45c9feabba213bdc6d72e7469de71ea5aeff73faea6bfb109ab5bad37c3b43bd"
+}
+boot_command = [
+	"<esc><wait>",
+	"auto ",
+	"DEBIAN_FRONTEND=text ",
+	"net.ifnames=0 ",
+	"biosdevnames=0 ",
+	"preseed/url=http://{{.HTTPIP}}:{{ .HTTPPort }}/debian/11-preseed.cfg ",
+	"console=ttyS0 ",
+	"<enter>"
+]

distros/debian-9-x86_64.pkrvars.hcl

@@ -0,0 +1,16 @@
+distro = "debian"
+version = "9"
+iso = {
+	url = "https://cdimage.debian.org/cdimage/archive/9.13.0/amd64/iso-cd/debian-9.13.0-amd64-netinst.iso"
+	checksum = "71c7e9eb292acc880f84605b1ca2b997f25737fe0a43fc9586f61d35cd2eb43b"
+}
+boot_command = [
+	"<esc><wait>",
+	"auto ",
+	"DEBIAN_FRONTEND=text ",
+	"net.ifnames=0 ",
+	"biosdevnames=0 ",
+	"preseed/url=http://{{.HTTPIP}}:{{ .HTTPPort }}/debian/9-preseed.cfg ",
+	"console=ttyS0 ",
+	"<enter>"
+]

distros/ubuntu-18.04-x86_64.pkrvars.hcl

@@ -10,7 +10,8 @@ boot_command = [
 	"<esc><wait1>",
 	"<f6><esc><bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
 	"auto=true priority=critical ",
-	"DEBIAN_FRONTEND=noninteractive ",
+	"locale=en_US.UTF-8 ",
+	"DEBIAN_FRONTEND=text ",
 	"preseed/url=http://{{.HTTPIP}}:{{.HTTPPort}}/ubuntu/18.04/preseed.cfg ",
 	"fsck.mode=skip ",
 	"console=ttyS0 ",