* [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

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

* resolve conflict.

* fix conflicts.

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

* resolve conflict.

* update doc for blm3's change

* fix faq port list

* add cmake to pick up blm3 or httpd options.

* change statsd port to 6044.