Remove packages installation from user-data

- New images for VCP don't contain iptables, so it requires
  to more complicated bootstrap process than waiting for 22 port.
  So, let's move all time-consumption commands to salt-shared.yaml

- Salt repositories used for bootstrap was from upstream, while
  should be from apt.mirantis.com

- Enable hugepages only on compute nodes for
  virtual-pike-ovs-dpdk config.

Change-Id: I4ca02c873f9594ee98d2c5f5fe8ffd7fb317ae91
35 files changed