[ota-requestor-app] Verify QueryImageResponse command

[holbrookt]

Problem

ota-requestor-app does not verify the contents of the QueryImageResponse command.

Proposed Solution

At the very least, it should:

• react to different values of Status (UpdateAvailable, Busy, NotAvailable) - reference 11.20.3.2 Querying the OTA Provider
• if UpdateAvailable:
  • use the ImageURI to download the image
  • verify that SoftwareVersion is greater than the current version - this is being tracked by Add support for software version handling in OTA Requestor #13604
  • print the SoftwareVersionString
• If Busy
  • Emit next query - longest of either 2 minutes from the last QueryImage command or delay specified in DelayedActionTime field
• If NotAvailable
  • Emit next query - longest of either 2 minutes from the last QueryImage command or delay specified in DelayedActionTime field

Verification of other fields can be added later.

[dhrishi]

@shubhamdp PTAL