Add method for delete empty message

[AKalinich-Luxoft]

Fixes #3368

This PR is ready for review.

Risk

This PR makes no API changes.

Testing Plan

Reproduction Steps

1. HMI sends array with empty structure { {} } in fuelRange on GetVehicleData_response / OnVehicleData_notification to SDL

Expected Behavior

for GetVehicleData:
SDL does respond GENERIC_ERROR to mobile
for OnVehicleData:
SDL does ignore this notification and SDL does not send OnVehicleData notifications to the mobile app.

Observed Behavior

for GetVehicleData:
SDL responds SUCCESS to mobile
for OnVehicleData:
SDL does not ignore this notification and sends OnVehicleData notification to mobile app.

Summary

Implementation on SDL side has been updated to ignore optional parameters containing the empty structures.

CLA

• I have signed the CLA

[AKalinich-Luxoft]

@theresalech this PR is ready for Livio review

[jacobkeeler]

@AKalinich-Luxoft A few other items that could be empty, should we cover these as well?

• climateData
• gearStatus
• tirePressure
• beltStatus
• deviceStatus
• stabilityControlsStatus
• seatOccupancy

[theresalech]

Hi @AKalinich-Luxoft , can you please review and respond to Jacob's comment? We are looking to complete development for the Core 8.0 release soon, so will need to make progress on this PR quickly in order to ensure its inclusion in the release. Thank you!

[AKalinich-Luxoft]

@theresalech Luxoft is working on the fix and going to provide extra changes according to Livio comments above.

[Jack-Byrne]

@AKalinich-Luxoft I noticed there were some updates for this pr, is this one ready for review?

[dboltovskyi]

@JackLivio Yes, PR in core is ready for review. Please also consider related update in scripts: smartdevicelink/sdl_atf_test_scripts#2573

[AKalinich-Luxoft]

@AKalinich-Luxoft A few other items that could be empty, should we cover these as well?

• climateData
• gearStatus
• tireStatus
• beltStatus
• deviceStatus
• stabilityControlsStatus
• seatOccupancy

@jacobkeeler this fix has been updated to extend the cut-off logic on empty structures like above. See 8407ab0