Add parameter to instrument tests for running sdk-in-sandbox

Sandbox-instrumented tests should allow two possible modes, either (1)
running the whole test as a sandbox, or (2) running a test as an sdk
inside the sandbox. Currently only mode (1) is supported. This CL
introduces an instrumentation parameter to support case (2).

Bug: 271270588
Test: I tested the two modes as follows:
 mode (1): atest CtsSdkSandboxInprocessTests
 mode (2): atest CtsSensorRatePermissionTestCases -- --enable-optional-parameterization --enable-parameterized-modules --module-parameter run_on_sdk_sandbox
Change-Id: I820f14a960eef4fc3d613107f73dee80aacbb9d0