Sergey Biryukov 829d7880c3 Tests: Set up the plugin download in multisite plugin tests to come locally.
This brings consistency between single site and multisite in REST API plugin installation tests.

Previously, multisite tests were unnecessarily downloading the plugin from WordPress.org on each test run, causing external HTTP requests and leading to failures in case of a timeout.

Follow-up to [48242], [49491], [49913].

Merges [49951] to the 5.6 branch.
See .

git-svn-id: https://develop.svn.wordpress.org/branches/5.6@50085 602fd350-edb4-49c9-b593-d223f7449a82
2021-01-30 10:39:20 +00:00
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2020-06-26 13:31:11 +00:00