simple vip lable update and then update subnet status

[zbb88888]

Pull Request

• Make sure you have followed Kube-OVN Code Style.

What type of this PR

Examples of user facing changes:

• Bug fixes

make sure two label add just at the same time
make sure VIP CRD update trigger subnet status re-calcultate

Which issue(s) this PR fixes

Fixes #(issue-number)

[coveralls]

Pull Request Test Coverage Report for Build 13652312093

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 3 (0.0%) changed or added relevant lines in 1 file are covered.
• 3 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.002%) to 22.061%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/controller/vip.go	0	3	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/controller/vip.go	1	0.0%
pkg/ovs/ovn-nb-logical_router_route.go	2	74.93%

Totals
Change from base Build 13635614479:	-0.002%
Covered Lines:	10261
Relevant Lines:	46512

---

💛 - Coveralls

[zbb88888]

hi @oilbeater , would you please help review? thanks!