feat: Add kube-qps and kube-burst parameters.

[chaunceyjiang]

What type of PR is this?

/kind feature
What this PR does / why we need it:
dd kube-qps and kube-burst parameters
Which issue(s) this PR fixes:
Fixes #745

Special notes for your reviewer:

Depends on PR #681

Does this PR introduce a user-facing change?:

[codecov]

Codecov Report

Attention: Patch coverage is 45.16129% with 17 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pkg/util/client/client.go	46.66%	13 Missing and 3 partials ⚠️
pkg/scheduler/scheduler.go	0.00%	1 Missing ⚠️

Flag	Coverage Δ
unittests	44.42% <45.16%> (+0.14%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
pkg/scheduler/scheduler.go	35.08% <0.00%> (+0.47%)	⬆️
pkg/util/client/client.go	42.22% <46.66%> (-11.95%)	⬇️