Enhancement on the SubnetPort realization performance

[heypnus]

Enhancement on the SubnetPort realization performance

1. Avoid the uncessary SubnetPort state check if the stauts indicates that
   the port has been realized successfully.
2. Get the Subnet's gateway address from Subnet store instead of Subnet
   status API to reduce the frequency of NSX API calls.

Testing done:

1. Created 3000 ports in the single Subnet (ipv4SubnetSize=4096), it took
   34 minutes to complete the realization(previously the time is > 90 minutes).
2. Created 3000 ports in the defualt SubnetSet (ipv4SubnetSize=32), it took
   36 minutes to complete the realization.

[heypnus]

/e2e

[codecov-commenter]

Codecov Report

❌ Patch coverage is 80.00000% with 20 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.48%. Comparing base (e4571c5) to head (dfd3a8a).

Files with missing lines	Patch %	Lines
pkg/nsx/services/subnetport/subnetport.go	70.58%	12 Missing and 3 partials ⚠️
...kg/controllers/subnetport/subnetport_controller.go	80.76%	4 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1250      +/-   ##
==========================================
- Coverage   74.50%   74.48%   -0.03%     
==========================================
  Files         147      147              
  Lines       23501    23527      +26     
==========================================
+ Hits        17509    17523      +14     
- Misses       4910     4920      +10     
- Partials     1082     1084       +2     

Flag	Coverage Δ
unit-tests	74.48% <80.00%> (-0.03%)	⬇️

Files with missing lines	Coverage Δ
...g/controllers/namespace/subnet_share_controller.go	63.34% <100.00%> (ø)
pkg/controllers/subnet/subnet_controller.go	70.54% <100.00%> (ø)
pkg/nsx/services/ipblocksinfo/ipblocksinfo.go	82.81% <100.00%> (ø)
pkg/nsx/services/subnet/subnet.go	74.39% <100.00%> (+0.22%)	⬆️
...kg/controllers/subnetport/subnetport_controller.go	65.77% <80.76%> (+0.04%)	⬆️
pkg/nsx/services/subnetport/subnetport.go	80.81% <70.58%> (-2.06%)	⬇️

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[dantingl]

Get the Subnet's gateway address from Subnet store instead of Subnet status API to reduce the frequency of NSX API calls.

Can you confirm Subnet response API can return gateway address and network address in 9.0 as well?

[heypnus]

/e2e

[heypnus]

/e2e

[yanjunz97]

Overalll LGTM. Just a thought for future changes.