1. Change parameter in Keyword Body Of Admin Push Signed Image to an
optional one.
2. Loose the restriction for Quotas error message verification.
3. Get cert for notary from API instead of local file.
Signed-off-by: Danfeng Liu (c) <danfengl@vmware.com>
Add notary remove signature test case in nightly
1. Update E2E image Dockerfile for adding notary CLI;
2. Add test case of remove notary signature.
Signed-off-by: Danfeng Liu (c) <danfengl@vmware.com>