test-mok-mirror: add a test case where MokListRT won't fit. #910

Job	Run time
f41 x64 build compile_commands.json	2m 40s
f41 aa64 cross-build	2m 1s
f41 x64 build	2m 3s
f40 aa64 cross-build	1m 58s
f40 x64 build	2m 5s
f41 arm cross-build	2m 4s
f39 x64 build	2m 0s
f40 arm cross-build	1m 54s
centos9 x64 build	1m 5s
f39 arm cross-build	1m 55s
centos8 x64 build	1m 21s
f41 x64 cross-build	2m 0s
f39 ia32 build	1m 55s
f40 x64 cross-build	1m 52s
centos8 ia32 build	1m 22s
f39 x64 cross-build	1m 51s
f41 ia32 cross-build	2m 3s
f40 ia32 cross-build	1m 57s
f39 ia32 cross-build	1m 58s
	36m 4s

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