Fixes #5637 - Don't raise lease conflicts when reading ad-hoc DHCP leases

fixes #4381: dns records are being update after changes to host when dhcp is also present

fixes #3697, #3701 - more comprehensive field validations

fixes #3170 - dash separated mac address notation

fixes #2285 - subnet validation - length of addresses, strip whitespace and fix common typos

fixes #1814 - converts sp_* attributes into a BMC interface class

this patch also includes the following

• added a new interfaces table, and STI objects to represent a NIC, BMC, Managed
  and a bootable interface.
• refactored DHCP/DNS orchestation code, so they can work on the...

make DNS lookup not fail on socket errors

adds ec2 provisioning support fixes #1223

- added progress bar for instance creation
- minor fixes for certname based deployments
- added ssh provisioning support to orchestartion, which utilize finish
scripts by default
- added images support (part of the vm compute tab)...

improve mac regexp, refs #1273

code smell