[services] Tests - Add chunk limit to tools

Summary:
Depends on D4247

Adding an equivalent to GRPC_CHUNK_SIZE_LIMIT - https://github.com/CommE2E/comm/blob/7e9032d9732db37fadbc2761ccfa3baac5875b2d/services/lib/src/GlobalConstants.h#L20

Test Plan: none really

Reviewers: palys-swm, varun

Reviewed By: palys-swm, varun

Subscribers: ashoat, palys-swm, Adrian, atul, yayabosh

Differential Revision: https://phab.comm.dev/D4248