[HSS] server group and protection status endpoints update

[anton-sidelnikov]

Part of ##747

What this PR does / why we need it

Which issue this PR fixes

Special notes for your reviewer

=== RUN   TestServerLifecycle
    server_group_test.go:44: Attempting to Create member for Server group
    common.go:285: Created ECSv2: 86b7e312-c6f4-432c-acd7-0039f5e3d337
    server_group_test.go:72: Attempting to Create Server group
    server_group_test.go:82: Attempting to Obtain Server group
    tools.go:75: [
          {
            "group_id": "c50521c6-4c42-4581-aad7-7174c5010e11",
            "group_name": "hss-group-2Ua",
            "host_id_list": [
              "86b7e312-c6f4-432c-acd7-0039f5e3d337"
            ],
            "host_num": 1,
            "risk_host_num": 0,
            "unprotect_host_num": 1
          }
        ]
    server_group_test.go:96: Attempting to Update Server group
    server_group_test.go:106: Attempting to Obtain Server group after update
    tools.go:75: [
          {
            "group_id": "c50521c6-4c42-4581-aad7-7174c5010e11",
            "group_name": "hss-group-2Uaupdate",
            "host_id_list": [
              "86b7e312-c6f4-432c-acd7-0039f5e3d337"
            ],
            "host_num": 1,
            "risk_host_num": 0,
            "unprotect_host_num": 1
          }
        ]
    server_group_test.go:115: Attempting to Change server Protection Status to null
    server_group_test.go:137: Attempting to Change server Protection Status to enterprise
    server_group_test.go:92: Attempting to Delete Server group
    server_group_test.go:54: Attempting to delete Server: 86b7e312-c6f4-432c-acd7-0039f5e3d337
--- PASS: TestServerLifecycle (27.81s)
PASS

Process finished with the exit code 0