Network types should use inet

[ocket8888]

I'm submitting an

improvement request (usability, performance, tech debt, etc.)

Traffic Control components affected ...

Traffic Ops

Current behavior:

IP addresses in the TODB are stored as text or byte strings - and usually separate IPv4 addresses and IPv6 addresses into separate columns/tables

Expected / new behavior:

IP addresses should make use of the inet datatype and should ideally not distinguish between IPv4 and IPv6.

[ocket8888]

Server network information now uses inet types, but there are still some places (off the top of my head, DS Bypass settings) that could use it.