* [TD-10469]<docs>: use blm3 for devops

* update techdoc to include telegraf/collectd/statsd

* resolve conflict.

* [TD-10469]<docs>: use blm3 for devops

* resolve conflict.

* update tech doc.

also change go proxy to cn

* [TD-10469]<docs>: use blm3 for devops

* resolve conflict.

* fix collectd and statsd section