Added integration test for host verification (#355)

• update ssl context config

• clean up comments

• add integration test for host SAN check

• Revert “update ssl context config”

This reverts commit e91526a73fa9a4d35bd9638d03964024221914ce.

• update the test handle websocket connection

• fix test

• Reapply “update ssl context config”

This reverts commit e503233745f2a4d4708f53782fe5168a1a608e17.

• update test to catch ssl error

• set keep alive sec to 60