The exception modules in ironic and ironic-lib contain the same
almost identical class IronicException.
With this patch we directly use the one in ironic-lib.
Updating requirements and lower-constraints to use compatible
version of ironic-lib.
Also deprecating duplicated fatal_exception_format_errors
option.
Change-Id: I1ce0d12d912020346425fd658d3b1807607455a4
Story: 1626578
Task: 10515
f5dbf8ba0c