Counter for http_requests by status_code

[dev-e]

Hi, could you please add counters for http requests status codes and maybe for http methods? E.g.:

jira_web_requests_counter{instance="jira:443",job="jira",status="200",method="get"} 123 jira_rest_requests_counter{instance="jira:443",job="jira",status="500",method="post"} 123

[AndreyVMarkelov]

In progress