As we like to use a local registry for nightly quotas test, so that the sample image will not be update without noticed, so modify quotas test case to use local image for pulling.
As we like to use a local registry for nightly quotas test, so that the sample image will not be update without noticed, so modify quotas test case to use local image for pulling.

Signed-off-by: Danfeng Liu (c) <9cf78649f6f3622aa770f93b1666af680107ade3@vmware.com>

wy65701436/harbor,wy65701436/harbor,reasonerjt/harbor,reasonerjt/harbor,wy65701436/harbor,wy65701436/harbor,reasonerjt/harbor,wy65701436/harbor,reasonerjt/harbor,wy65701436/harbor,reasonerjt/harbor,reasonerjt/harbor