Connection Analyzer

Hi everyone,
The diff implementing ConnectionAnalyzer has landed. The ConnectionAnalyzer can be used to view the connection dependencies of a backend application, grouped by the type of the connection. Postgresql, MongoDB, SQS, RPC, Memcached, and DynamoDB connections are avaiable as of now.

For more information, you can refer to https://29022131.atlassian.net/wiki/display/ENG/How+to+Check+Backend+Application+Connection+Dependencies