Add flags to set server key and certificate

[lxlxok]

This PR resolve #1942

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @lxlxok. Thanks for your PR.

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[kishorj]

/ok-to-test

[codecov-commenter]

Codecov Report

Merging #1983 (5f5eee5) into main (eb2c151) will decrease coverage by 0.44%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #1983      +/-   ##
==========================================
- Coverage   49.29%   48.84%   -0.45%     
==========================================
  Files         125      130       +5     
  Lines        6875     6997     +122     
==========================================
+ Hits         3389     3418      +29     
- Misses       3211     3302      +91     
- Partials      275      277       +2     

Impacted Files	Coverage Δ
pkg/config/runtime_config.go	0.00% <0.00%> (ø)
pkg/ingress/model_build_load_balancer.go	48.83% <0.00%> (-0.72%)	⬇️
pkg/deploy/elbv2/target_group_manager.go	47.05% <0.00%> (-0.71%)	⬇️
pkg/ingress/model_build_managed_sg.go	67.30% <0.00%> (-0.49%)	⬇️
pkg/ingress/model_build_target_group.go	72.97% <0.00%> (-0.31%)	⬇️
pkg/deploy/elbv2/load_balancer_manager.go	20.00% <0.00%> (-0.25%)	⬇️
pkg/ingress/model_builder.go	62.65% <0.00%> (-0.17%)	⬇️
pkg/deploy/ec2/security_group_manager.go	4.65% <0.00%> (-0.12%)	⬇️
pkg/deploy/elbv2/listener_manager.go	1.12% <0.00%> (-0.02%)	⬇️
pkg/ingress/model_build_actions.go	51.97% <0.00%> (ø)
... and 10 more

---

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[lxlxok]

/retest

[lxlxok]

Hi @kishorj, thanks for your review, all the comments have been addressed. PTAL

[kishorj]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kishorj, lxlxok

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