New file indexation via indexer

[Carcamo-ben]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [ ] bug report -> please search issues before submitting
- [ X ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

Deploy demo

Any log messages given by the failure

Expected/desired behavior

When I upload new files to the Azure Blob, have the searchservice re run the indexation

OS and Version?

Windows 7, 8 or 10. Linux (which distribution). macOS (Yosemite? El Capitan? Sierra?)

Versions

Mention any other details that might be useful

This can be done by adding an indexer with default schedule of daily and then we can run it manually whenever we need to in the Azure portal.

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