oss changes for entropy augmentation feature (#7670)

* oss changes for entropy augmentation feature

* fix oss command/server/config tests

* update go.sum

* fix logical_system and http/ tests

* adds vendored files

* removes unused variable

command/server/config_util.go

@@ -0,0 +1,13 @@
+package server
+
+import (
+	"github.com/hashicorp/hcl/hcl/ast"
+)
+
+var(
+	parseEntropy = parseEntropyOSS
+)
+
+func parseEntropyOSS(result *Config, list *ast.ObjectList, blockName string) error {
+	return nil
+}