1. Add build base image step in build package git action workflow;
2. Add build base step to UT test in CI, base image used by UI test should be built before building harbor image in the same runtime;
3. In build package workflow, trigger build base image step in condition of changing both in
Dockerfile.base and VERSION;
4. Add tag for setup nightly test.
Signed-off-by: danfengliu <danfengl@vmware.com>
