Switch to AXI4 and offline difftest #2863

Job	Run time
Generate test plan	5s
Test elaborate	4m 13s
Build Emulators (blastoise)	1m 58s
Build trace emulator (blastoise)	7m 30s
Build trace emulator (machamp)	17m 16s
Build Emulators (machamp)	3m 23s
Build trace emulator (sandslash)	36m 59s
Build Emulators (sandslash)	20m 49s
Request physical design report	0s
Prepare for running testcases	0s
Run testcases	0s
Report CI result	39s
	1h 32m 52s

Provide feedback