replaced SDLServiceTypeRPC with service parameter

[lapinskijw]

Fixes #1577

This PR is ready for review.

Risk

This PR makes minor API changes.

Testing Plan

• I have verified that I have not introduced new warnings in this PR (or explain why below)
• I have run the unit tests with this PR
• I have tested this PR against Core and verified behavior (if applicable, if not applicable, explain why below).

Unit Tests

Ran tests without failure. No unit tests were added or changed.

Core Tests

Core version / branch / commit hash / module tested against: SYNC 3.0 (Build 17276_DEVTEST)
HMI name / version / branch / commit hash / module tested against: sdl_core 6.0.1 (Generic HMI 0.7.2)

Used Trippy app to connect to Core and verified that the correct mtu size was being used.
SYNC 3.0 (Build 17276_DEVTEST):

• mtu size: 131024

sdl_core 6.0.1 (Generic HMI 0.7.2)

• mtu size: 131072

Summary

Fixed an issue where we were getting the mtu size from SDLServiceTypeRPC for RPC, video, and audio services. Instead, we are now using the passed in service parameter to get the mtu size.

Changelog

Bug Fixes

• sdl_sendRawData:onService:encryption: no longer uses SDLServiceTypeRPC to set the mtu size and will now use the mtu size from the service passed in.

CLA

• I have signed the CLA

[NicoleYarroch]

Tested with video streaming app on SYNC 4.0 and SYNC 3.0 and with a template app on Manticore (SDL Core v6.0.1 and Generic HMI v0.7.2)