install longhorn deps

fixes #8

post-debootstrap-installer.sh

@@ -57,10 +57,15 @@ sed -i "s/%boot_uuid%/${boot_uuid}/" /etc/fstab
 sed -i "s/%disk1_uuid%/${disk1_uuid}/" /etc/fstab
 sed -i "s/%disk2_uuid%/${disk2_uuid}/" /etc/fstab
 
+# install longhorn dependencies
+apt-get -y install open-iscsi nfs-common
+systemctl disable rpcbind.service # rpcbind is not used with NFS v4
+
 # after cryptsetup, mdadm, ... because of update-initramfs
 apt-get -y install linux-image-amd64
 
 
+
 ### networking
 
 apt-get -y install iproute2