refactor(cve): improve CVE test time by mocking trivy (#1184)

- refactor(cve): remove the global of type cveinfo.CveInfo from the extensions package
  Replace it with an attribute on controller level
- refactor(controller): extract initialization logic from controller.Run()
- test(cve): mock cve scanner in cli tests

Signed-off-by: Andrei Aaron <aaaron@luxoft.com>

pkg/extensions/sync/sync_test.go

@@ -784,6 +784,10 @@ func TestConfigReloader(t *testing.T) {
 
 		go func() {
 			// this blocks
+			if err := dctlr.Init(reloadCtx); err != nil {
+				return
+			}
+
 			if err := dctlr.Run(reloadCtx); err != nil {
 				return
 			}