#### Why I did it
Segfault was occuring when running memory_checker
#### How I did it
Deinit publisher immediately after publishing
#### How to verify it
Manual testing
#### Why I did it
Timestamp formatter inside UT was failing due to new year change
#### How I did it
Use a const stored year that will used as expected value
#### How to verify it
Run UT
This PR is part of the following HLD:
Persistent loglevel HLD: sonic-net/SONiC#1041
- Why I did it
After the Logger tables moved from the LOGLEVEL_DB to the CONFIG_DB and the jinja2_cache was deleted the LOGLEVEL_DB is not in use.
- How I did it
Removed the LOGLEVEL_DB from the SONiC code
- How to verify it
All tests were passed
Signed-off-by: maipbui <maibui@microsoft.com>
#### Why I did it
`subprocess` is used with `shell=True`, which is very dangerous for shell injection.
#### How I did it
remove `shell=True`, use `shell=False`
With this PR in, you flap BGP and use events_tool to see the published events.
With telemetry PR #111 in and corresponding submodule update done in buildimage, one could run gnmi_cli to capture BGP flap events.
