Revert "Apparently I need to persist the entry as well"

This reverts commit 282b39cdef7f32b6ade5b4f3f07ce99171c2f898.
Revert "Use VmInstance instead of VmBootRecord for upgrade"

This reverts commit 374e153ea54da820d1a29f2efec16d465ddee2b7.
Revert "Fix issue where new DB field isn't being upgraded properly"

This reverts commit 88177bb7cc0025f8486c2a0e7bd260ef4e8270dc.
Revert "EUCA-5033 Cannot detach "root" EBS volume from stopped instance"

This reverts commit 6e174aa21a6f6d37b635c1ae410160fe7f5cfae3.