(appbase sync) disallow unknown configs in config.ini

fix bugs in abi_serializer variant to binary

Breakout the non-parallelizable tests in to their own buildkite unit so they can easily be run simultaneously with the other parallelizable ones.

Add a new WASM backend: wabt

Fix mongo_db_plugin shutdown problem

Correct assert message by including delay_max_limit_ms

Improve Integration Test Diagnostics for missing transactions

delay_max_limit_ms is defined to print delay_max_limit.
However, delay_max_limit_ms was not included in the assert message.
As intended, delay_max_limit_ms is included in the assert message.

check unlock-timeout overflow

Add diagnostics in Node.getTransaction to walk the blocks on the node and print out when transaction cannot be found. GH #5674

Should be added if timeout_time.time_since_epoch().count() is negative on Ubuntu 16.04.

$ ./build/programs/keyos/keyos --unlock-timeout 9999999999 --http-server-address 127.0.0.1:8900
2018-09-14T15:00:44.373 thread-0   wallet_plugin.cpp:42          plugin_initialize    ] initializing wallet plugin
2018-09-14T15:00:44.373 thread-0   wallet_plugin.cpp:68          plugin_initialize    ] 3120011 invalid_lock_timeout_exception: Wallet lock timeout is invalid
Overflow on timeout_time, specified 9999999999, now 1536937244373317352, timeout_time -6909806830336234264
    {"t":"9999999999","now":"1536937244373317352","timeout_time":-6909806830336234264}
    thread-0  wallet_manager.cpp:47 set_timeout

avoid plugin through irreversible_block signal change block before apply_block

Parrallelize Integration Tests

Additional info for Unknown key exceptions

get_raw_abi

ABI 1.1

Fixed test to use if checks and exitError method instead of assert, so that shutdown function can be called. GH #5653

Add block info & ram delta to action_trace