[EOSIO/eos] Gh#5149 mongo (#5339)

Resolves #5149

— Add block_num & block_time to action_trace
— Update block_state with irreversible=true on irreversible signal
You can view, comment on, or merge this pull request online at:

https://github.com/EOSIO/eos/pull/5339

— Commit Summary —

* Add block_num & block_time to action_trace
* Add irreversible flag to block_state

— File Changes —

M libraries/chain/apply_context.cpp (2)
M libraries/chain/include/eosio/chain/trace.hpp (5)
M plugins/mongo_db_plugin/mongo_db_plugin.cpp (25)

— Patch Links —

https://github.com/EOSIO/eos/pull/5339.patch
https://github.com/EOSIO/eos/pull/5339.diff