Support bucket versioning (#9377)

- Implement a new xl.json 2.0.0 format to support,
  this moves the entire marshaling logic to POSIX
  layer, top layer always consumes a common FileInfo
  construct which simplifies the metadata reads.
- Implement list object versions
- Migrate to siphash from crchash for new deployments
  for object placements.

Fixes #2111

pkg/bucket/lifecycle/rule_test.go

@@ -25,8 +25,7 @@ import (
 // TestUnsupportedRules checks if Rule xml with unsuported tags return
 // appropriate errors on parsing
 func TestUnsupportedRules(t *testing.T) {
-	// NoncurrentVersionTransition, NoncurrentVersionExpiration
-	// and Transition tags aren't supported
+	// NoncurrentVersionTransition, and Transition tags aren't supported
 	unsupportedTestCases := []struct {
 		inputXML    string
 		expectedErr error
@@ -37,13 +36,6 @@ func TestUnsupportedRules(t *testing.T) {
 	                    </Rule>`,
 			expectedErr: errNoncurrentVersionTransitionUnsupported,
 		},
-		{ // Rule with unsupported NoncurrentVersionExpiration
-
-			inputXML: ` <Rule>
-	                     <NoncurrentVersionExpiration></NoncurrentVersionExpiration>
-	                    </Rule>`,
-			expectedErr: errNoncurrentVersionExpirationUnsupported,
-		},
 		{ // Rule with unsupported Transition action
 			inputXML: ` <Rule>
 	                     <Transition></Transition>