[rsyslog]: Remote logging with the highest rule priority

[nazariig]

Why I did it

This fix resolves issue with missing certain types of messages while forwarding to the remote server.

Basically, this moves remote syslog forwarding rules to be executed before any other instructions take place,
so everything received by a local syslog instance will be forwarded to the remote machine.

The fix allows remote forwarding of messages defined as:
https://github.com/sonic-net/sonic-buildimage/blob/master/files/image_config/rsyslog/rsyslog.d/00-sonic.conf.j2

Work item tracking

• N/A

How I did it

• Moved rsyslog remote forwarding rules to be on top of other syslog instructions

How to verify it

1. Enable remote syslog forwarding
2. Check for message patterns defined as 00-sonic.conf.j2

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305

Tested branch (Please provide the tested image version)

• master

Description for the changelog

• N/A

Link to config_db schema for YANG module changes

• N/A

A picture of a cute animal (not mandatory but encouraged)

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[mssonicbld]

/azp run Azure.sonic-buildimage

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Azure Pipelines successfully started running 1 pipeline(s).

[mssonicbld]

/azp run Azure.sonic-buildimage

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[mssonicbld]

/azp run Azure.sonic-buildimage

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[zbud-msft]

@nazariig Can you please raise PR in sonic-mgmt that provides testcase for this fix, since there was a test gap?

[zbud-msft]

@nazariig There is conflict in 202305/202311 branches, can you please raise PR to these branches?

[kperumalbfn]

@nazariig could you please create a PR for 202411 due to conflict.

[mssonicbld]

Cherry-pick PR to 202411: #22020

[mssonicbld]

Cherry-pick PR to 202405: #22021