Merge pull request #46988 from p0lyn0mial/rename_some_admission_pkg

Automatic merge from submit-queue (batch tested with PRs 46718, 46828, 46988)

Simply changed the names of packages of some admission plugins.

**What this PR does / why we need it**:
This PR simply changes the names of packages of some admission plugins so that they are not in conflict with admission pkg.

**Release note**:

```release-note
NONE
```

plugin/BUILD

@@ -36,7 +36,7 @@ filegroup(
         "//plugin/pkg/admission/security:all-srcs",
         "//plugin/pkg/admission/securitycontext/scdeny:all-srcs",
         "//plugin/pkg/admission/serviceaccount:all-srcs",
-        "//plugin/pkg/admission/storageclass/default:all-srcs",
+        "//plugin/pkg/admission/storageclass/setdefault:all-srcs",
         "//plugin/pkg/admission/webhook:all-srcs",
         "//plugin/pkg/auth:all-srcs",
         "//plugin/pkg/scheduler:all-srcs",

plugin/pkg/admission/podpreset/admission.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package admission
+package podpreset
 
 import (
 	"fmt"

plugin/pkg/admission/podpreset/admission_test.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package admission
+package podpreset
 
 import (
 	"reflect"

plugin/pkg/admission/security/podsecuritypolicy/admission.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package admission
+package podsecuritypolicy
 
 import (
 	"fmt"

plugin/pkg/admission/security/podsecuritypolicy/admission_test.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package admission
+package podsecuritypolicy
 
 import (
 	"fmt"

plugin/pkg/admission/storageclass/setdefault/admission.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package admission
+package setdefault
 
 import (
 	"fmt"

plugin/pkg/admission/storageclass/setdefault/admission_test.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package admission
+package setdefault
 
 import (
 	"testing"