A client will always try to connect all coordinators.
This commit let Status track the number of connected coordinators
for each client.
This allows us to do canary in coordinators. For example,
when we switch from non-TLS to TLS, we can switch 1 coordinator
from non-TLS to TLS. This can help check if a client has the ability
to connect through TLS.
We can make the non-TLS to TLS switch for each coordinators
one by one. This avoid the risk of losing connection in the switch.
* client-transaction-id:
Add user provided transaction id as part of the format in ClientTransactionProfileCorrectness workload.
Addressed review comments.
Apply suggestions from code review
Add support for client provided transaction identifier to be logged as part of trace logging or transaction profiling.
Evan Tschannen