Refactored response with connection close token

[hardikspanchal]

Send a "Connection: close" message in general header followed status-code. It is a signal to sender that connection will be closed after completion of the response.

Test:

• Apr 06 02:12:18 intel-obmc bmcweb[396]: (2022-04-06 02:12:18) [DEBUG "http_client.hpp":135] Connected to: 10.190.201.113:5008
• Apr 06 02:12:18 intel-obmc bmcweb[396]: (2022-04-06 02:12:18) [DEBUG "http_client.hpp":165] SSL Handshake successfull
• Apr 06 02:12:18 intel-obmc bmcweb[396]: (2022-04-06 02:12:18) [DEBUG "http_client.hpp":189] sendMessage() bytes transferred: 619
• Apr 06 02:12:19 intel-obmc bmcweb[396]: (2022-04-06 02:12:19) [DEBUG "http_client.hpp":224] recvMessage() bytes transferred: 38
• Apr 06 02:12:19 intel-obmc bmcweb[396]: (2022-04-06 02:12:19) [DEBUG "http_client.hpp":240] recvMessage() Header Response Code: 200
• Apr 06 02:12:19 intel-obmc bmcweb[396]: (2022-04-06 02:12:19) [DEBUG "http_client.hpp":263] recvMessage() keepalive : 0
• Apr 06 02:12:19 intel-obmc bmcweb[396]: (2022-04-06 02:12:19) [INFO "http_client.hpp":323] doClose(): Connection closed by server.
• Apr 06 02:12:19 intel-obmc bmcweb[396]: (2022-04-06 02:12:19) [DEBUG "http_client.hpp":459] requestDataQueue is empty

Signed-off-by: Hardik Panchal hardikx.panchal@intel.com

Fix #18

[mraineri]

Approved 4/8