Adding tls support for akms-ckms client and server

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

akms-simulator/akms-simulator.go

@@ -70,9 +70,13 @@ func main() {
 		}
 
 		server.TLSConfig = tlsConfig
+
+		logrus.Fatal(server.ListenAndServeTLS("", ""))
+	} else {
+
+		logrus.Fatal(server.ListenAndServe())
 	}
 
-	logrus.Fatal(server.ListenAndServe())
 }
 
 func getLogFile(w http.ResponseWriter, r *http.Request) {