Tests which @requires_blockstore (i.e. the Blockstore service) have
been made to run as a unit test using the installed Blockstore app, and
will be run by the platform CI.
The Blockstore service tests can still be run manually by setting
EDXAPP_RUN_BLOCKSTORE_TESTS=1
Related fixes:
* adds blockstore bundle storage settings
* let the studio devstack and test servers serve static files from
the /media URL This allows the blockstore/content libraries API to
serve blockstore assets in dev.
* Wrap ContentLibrary creation in an atomic transaction, so that if it
fails, the related bundle can be deleted directly from the database
during the exception handler. (Previously, we called a REST API which
deleted it as part of a separate service.)
8b77638bf0