RANGER-4993 : Ranger KMS - Missing HSTS Headers for 404 Not found requests port 9494

[dhavalshah9131]

What changes were proposed in this pull request?

RANGER-4993 : Ranger KMS - Missing HSTS Headers for 404 Not found requests port 9494

HSTS header is missing for 404 Not found requests .

E.G.
curl -ivk -u keyadmin:Admin123 https://:9494/

OR

curl -ivk --negotiate -u : https://:9494

< HTTP/1.1 404 Not Found
HTTP/1.1 404 Not Found
< Content-Type: text/html;charset=utf-8
Content-Type: text/html;charset=utf-8
< Content-Language: en
Content-Language: en
< Content-Length: 682
Content-Length: 682
< Date: Mon, 26 Aug 2024 13:12:21 GMT
Date: Mon, 26 Aug 2024 13:12:21 GMT
< Server: Apache Ranger
Server: Apache Ranger

How was this patch tested?

Successfully validated the HSTS header for above API and all the existing APIs such as GET keys, create keys, rollover keys , delete keys.

[vikaskr22]

I have added few minor review comments, other things look good to me.

[vikaskr22]

Looks good to me now.