refactor: split validate logic to a new file

[glimchb]

Signed-off-by: Boris Glimcher Boris.Glimcher@emc.com

[codecov]

Codecov Report

Merging #192 (04cff41) into main (42afe43) will increase coverage by 0.46%.
Report is 1 commits behind head on main.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #192      +/-   ##
==========================================
+ Coverage   74.33%   74.79%   +0.46%     
==========================================
  Files           7       11       +4     
  Lines        1095     1115      +20     
==========================================
+ Hits          814      834      +20     
  Misses        246      246              
  Partials       35       35              

Files Changed	Coverage Δ
pkg/evpn/bridge.go	72.53% <100.00%> (-1.23%)	⬇️
pkg/evpn/bridge_validate.go	100.00% <100.00%> (ø)
pkg/evpn/port.go	72.97% <100.00%> (-1.17%)	⬇️
pkg/evpn/port_validate.go	100.00% <100.00%> (ø)
pkg/evpn/svi.go	72.24% <100.00%> (-1.30%)	⬇️
pkg/evpn/svi_validate.go	100.00% <100.00%> (ø)
pkg/evpn/vrf.go	75.58% <100.00%> (-0.38%)	⬇️
pkg/evpn/vrf_validate.go	100.00% <100.00%> (ø)