[B-42948][TK-75485] add metrics to JdbcFeedSource/Publisher
[B-42948][TK-75485] add feature toggle (set property enableMetrics=true) for all metrics (default is false), remove metrics on hydate-feed
Merge pull request #233 from shintasmith/master

[B-42948][TK-75485] add metrics to JdbcFeedSource/Publisher