TT-5427 Intermittent purging - missed records when APIs include TCP API with tracking enabled

[NgariNdungu]

I believe this is related to issue #210. Adding this to get more visibility for the LTS release of tyk.
I'm running tyk-gateway v3.0.6 and tyk-pump v1.4.0.
I've noticed that when running our test suite - sends about 100 calls to tyk - the analytics records are all sent to mongo but when making single calls via curl/postman most of the records are missed.
In local testing, based on #210, I've set "do_not_track": true on the TCP proxy and this seems to fix the issue.

[tbuchaillot]

Hey @NgariNdungu, currently, we don't support TCP analytics. I'll let you know if we start working on this in the near future.