Adding Restore URL support to the new OM restore dialog for MI Server

[ssreerama]

Adds the ability to support the restore database from URL, for a new restore dialog and for MI databases.

Note: TODO: Tasks tab shows multiple messages (unwanted one even in fail cases) will send a new PR if it takes time.

[coveralls]

Pull Request Test Coverage Report for Build 7123315438

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 41.604%

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Totals
Change from base Build 7111709705:	0.0%
Covered Lines:	30818
Relevant Lines:	69389

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💛 - Coveralls

[corivera]

Tried the changes out locally since they were a bit complicated to parse through just in text. I'm hitting an issue where the dialog is stuck in a spinning state after selecting a backup file from blob storage to use for the Restore from URL scenario. I'm using both of your ADS and STS branches for this change.

Looks like some planDetails fields are undefined when I'm hitting that problem. So like when trying to get the currentValue for the sourceDatabaseName or targetDatabaseName in the planDetails.

For my test scenario, I made a backup from a 2022 Docker instance, and then tried to select that backup file from a storage account when restoring to a newly created Managed Instance database. The backup file might end up being incompatible due to version differences, but I'm not even able to get to the step where I can Script out the operation or hit Restore. The buttons remain grayed out.

[ssreerama]

Hey @corivera , I tried to repro the issue and couldn't, it is working fine. Below are the steps that I followed.

1. Created a database and added a table with data in 2022 Docker instance.
2. Using SSMS, I took a backup to URL.
3. In Managed Instance Server, opened the restore database and selected the above backed up file from the blob storage.
4. It took few seconds(hardly 4-6) to load the restore plan with the selected one.
5. Selected a new database name (as we cannot restore on existing DB in MI).
6. both script and restore button worked and I can see the new database.

Please correct me if I missed any step. Thanks

[ssreerama]

Able to found couple of issues with Docker and fixed them also, added URL support to on-prem servers. (MI supports only URL, all other supports database/back-up files/ URL)