Revert "Revert "CLOUDSTACK-737""

This reverts commit 447d49ae91277be2d8e60c28a5acd86a0e6691d5.
Revert "Revert "CLOUDSTACK-737""

This reverts commit dd67cfc5d07783cd4f8cf3480323f3ed030cc216.
fix build issue after revert
CLOUDSTACK-1066: fix openswan install to not require interactive input
CLOUDSTACK-1066: no need for build helpers. Also reduces attack surface of system vm

CLOUDSTACK-1066: no need for busybox and dictionaries

CLOUDSTACK-1066: fix bug in generating signature

CLOUDSTACK-1066: don't confuse veewee about root password
Clean up stuff copied in to vm by veewee