#### Why I did it
Update scripts in sonic-buildimage from py-swsssdk to swsscommon
#### How I did it
Change code to use swsscommon.
#### How to verify it
Pass all E2E test case
#### Which release branch to backport (provide reason below if selected)
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- [x] 202006
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- [ ] 201811
- [ ] 201911
- [ ] 202006
- [ ] 202012
- [ ] 202106
- [ ] 202111
- [ ] 202205
#### Description for the changelog
Update scripts in sonic-buildimage from py-swsssdk to swsscommon
#### Link to config_db schema for YANG module changes
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Link should point to correct section on https://github.com/Azure/sonic-buildimage/blob/master/src/sonic-yang-models/doc/Configuration.md
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#### A picture of a cute animal (not mandatory but encouraged)
- Why I did it
Fastboot will delay all counters in CONFIG DB, it relies on enable_counters.py to recover the delayed counters. However, enable_counters.py does not recover those non-default counters.
- How I did it
For non-default counters, if it is in CONFIG DB, put delay status to false after the waiting.
- How to verify it
Manual test
* [ACL] enable ACL FC when genereting config from minigraph but disable by default
Why I did it
To support ACL counters on Flex Counter Infrastructure.
How I did it
Enable ACL FC in init_cfg and minigraph. Disable when genereting configuration from preset.
How to verify it
Together with depends PRs. Run ACL/Everflow test suite.
Signed-off-by: Stepan Blyshchak <stepanb@nvidia.com>
#### Why I did it
Reset flex counters delay flag on config DB when enable_counters script is called to allow enablement of flex counters in orchagent.
#### How I did it
Push to config DB 'false' value for delay indication when enable_counters script is called before enabling the counters.
#### How to verify it
Observe counters are created when enable_counters script is called.
**- Why I did it**
Align style with slightly modified PEP8 standards (extend maximum line length to 120 chars). This will also help in the transition to Python 3, where it is more strict about whitespace, plus it helps unify style among the SONiC codebase. Will tackle other directories in separate PRs.
**- How I did it**
Using `autopep8 --in-place --max-line-length 120` and some manual tweaks.
**- Why I did it**
As part of moving all SONiC code from Python 2 (no longer supported) to Python 3
**- How I did it**
- Convert enable_counters.py script to Python 3
- Reorganize imports per PEP8 standard
- Two blank lines precede functions per PEP8 standard
**- Why I did it**
We need RIF counters to be enabled by default. Flex Counter does probe for supported counters. If a platform does not support RIF counters, SAI will return NOT_SUPPORTED and Flex Counter will stop polling the counter.
**- How to verify it**
After fresh install rif counter gropup is enabled by default:
$ counterpoll show
Type Interval (in ms) Status
-------------------- ------------------ --------
QUEUE_STAT default (10000) enable
PORT_STAT default (1000) enable
RIF_STAT default (1000) enable
QUEUE_WATERMARK_STAT default (10000) enable
PG_WATERMARK_STAT default (10000) enable
Signed-off-by: Mykola Faryma <mykolaf@mellanox.com>
