Merge pull request #20066 from edx/youngstrom/INCR-117

.../djangoapps/catalog/management/commands/cache_programs.py

...atalog/management/commands/create_catalog_integrations.py

...jangoapps/catalog/management/commands/sync_course_runs.py

.../catalog/management/commands/tests/test_cache_programs.py

...gement/commands/tests/test_create_catalog_integrations.py

...atalog/management/commands/tests/test_sync_course_runs.py

openedx/core/djangoapps/catalog/migrations/0001_initial.py

...ps/catalog/migrations/0002_catalogintegration_username.py

...s/catalog/migrations/0003_catalogintegration_page_size.py

.../djangoapps/catalog/migrations/0004_auto_20170616_0618.py

...migrations/0005_catalogintegration_long_term_cache_ttl.py

openedx/core/djangoapps/catalog/tests/factories.py

openedx/core/djangoapps/catalog/tests/mixins.py

openedx/core/djangoapps/catalog/tests/test_models.py

openedx/core/djangoapps/catalog/tests/test_utils.py