verify no value overhaul issues on test coverage

[sreuland]

Confirmed that value overhaul changes from latest on tools did not have an effect at system test/client usage level, no errors were found against latest build of tools, tests passed:

$ make CORE_GIT_REF=https://github.com/stellar/stellar-core.git#064a2787acb9e98c70567523785333581ee1ffa4 \
CORE_COMPILE_CONFIGURE_FLAGS="--disable-tests --enable-next-protocol-version-unsafe-for-production" \
SOROBAN_RPC_GIT_REF=https://github.com/stellar/soroban-tools.git#main \
RUST_TOOLCHAIN_VERSION=stable \
SOROBAN_CLI_GIT_REF=https://github.com/stellar/soroban-tools.git#main \
QUICKSTART_GIT_REF=https://github.com/stellar/quickstart.git#master \
build

$ docker run --rm -it --name e2e_test stellar/system-test:dev --VerboseOutput true
...
9 scenarios (9 passed)
53 steps (53 passed)
5m29.556048899s

Did have to make one minor change to fix test failure on now deprecated --identity param.

Closes #41

[sreuland]

when this merges, I'll cut new release of system-test and update soroban-tools/e2e to use that.