test: Skip running tests where initscripts is not supported

[liangwen12year]

Enhancement:

Reason:

Result:

Issue Tracker Tickets (Jira or BZ if any):

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (428273c) 43.31% compared to head (70e4146) 43.31%. Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #663 +/- ## ======================================= Coverage 43.31% 43.31% ======================================= Files 13 13 Lines 3068 3068 Branches 394 394 ======================================= Hits 1329 1329 Misses 1739 1739 ``` | [Flag](https://app.codecov.io/gh/linux-system-roles/network/pull/663/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=linux-system-roles) | Coverage Δ | | |---|---|---| | [sanity](https://app.codecov.io/gh/linux-system-roles/network/pull/663/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=linux-system-roles) | `19.82% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=linux-system-roles#carryforward-flags-in-the-pull-request-comment) to find out more.

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[liangwen12year]

[citest]

[liangwen12year]

@richm , feel free to merge it, thanks