ignore external_dependencies in src

[feng-j678]

• ignore external_dependencies in codecov

[codecov[bot]]

Codecov Report

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

Comparison is base (357ab4c) 90.72% compared to head (6fad653) 90.72%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #238 +/- ## ======================================= Coverage 90.72% 90.72% ======================================= Files 91 91 Lines 15456 15456 ======================================= Hits 14022 14022 Misses 1434 1434 ``` | [Flag](https://app.codecov.io/gh/Azure/LinuxPatchExtension/pull/238/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Azure) | Coverage Δ | | |---|---|---| | [python27](https://app.codecov.io/gh/Azure/LinuxPatchExtension/pull/238/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Azure) | `90.72% <ø> (ø)` | | | [python39](https://app.codecov.io/gh/Azure/LinuxPatchExtension/pull/238/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Azure) | `90.72% <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=Azure#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.