[spm]: Clean up timers auto generation logic

[nazariig]

Signed-off-by: Nazarii Hnydyn [email protected]

Config Reload Enhancements PR https://github.com/sonic-net/SONiC/pull/1203 does not completely remove TIMERs from SONiC Package Manager infra. This PR is intended to complete the original changes.

Systemd TIMERs infra was replaced by hostcfgd service management. That was done to improve reliability of service management.

What I did

• Removed redundant TIMERs infra

How I did it

• Updated SPM auto generation logic

How to verify it

1. Install application extension

spm install --from-tarball <app_ext_path>

2. Make sure delayed flag is set

docker image inspect <app_ext_image> | jq '.[].Config.Labels["com.azure.sonic.manifest"]' | python -c 'import sys,ast; print(ast.literal_eval(sys.stdin.read()))' | jq .service.delayed
true

3. Check no TIMERs were generated

Previous command output (if the output of a command-line utility has changed)

• N/A

New command output (if the output of a command-line utility has changed)

• N/A

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

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