Skip license fetcher

[dgdavid]

Problem

YaST downloads the license from SCC, but then it tries to find the license on the installation medium as well. — comment#13 at bsc#1153326

• Trello: https://trello.com/c/ORqk8sk7/1444-1-p1-yast-asks-for-media-because-of-a-license-to-show-but-the-license-is-missing
• Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1153326

Why?

Because the installer is looking for a license fetcher even when the license content was already provided, which

• seems to be a wrong behavior although it will not fail most of times.
• is a consequence of changes made in Display the license contained in the fallback repo #880, at the time to introduce a new license fetcher to get them from an .rpm fallback repo

Note: the provided license content is used only for the default language, which was already discussed in a closed - and similar - PR for SLE-15-SP1 branch (see comments in #982).

Solution

Do not look for a license fetcher when the license content is given.

Tests

• Unit tests updated
• Tested by hand via driver update yupdate

Screenshots

Click to show/hide some screenshots

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The error shown WITHOUT the patch

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The step shown WITH the patch applied

Other relevant screenshots

The SLE-HA module selected	A relevant part in the logs

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Kudos to @lslezak

[coveralls]

Coverage remained the same at 29.141% when pulling 716d3f1 on skip_license_fetcher into 0f84dfb on master.

[lslezak]

LGTM

[yast-bot]

✔️ Public Jenkins job #145 successfully finished
✔️ Created OBS submit request #750088

[yast-bot]

✔️ Internal Jenkins job #45 successfully finished
✔️ Created IBS submit request #205860