td-1033: fix high cpu usage

Modify the incorrect use of tqueue

unlock dbmutex while create vgroup failed

Feature/platform

Feature/platform

add opentsdbTestWriteLoop.sh

fix hard code server ip in opentsdb test program.

[TD-1042]

Now able to create a service-side core dump problem

Feature/td 1033: taosd to report install/usage info

Update Model-ch.md

minor changes

add more trace for tqueue

Update architecture-ch.md

Update Model-ch.md

Update insert-ch.md

delete some blank spaces