tests: Fix 'ICMP related with SNAT' test case in offload scenario. #2714

Job	Run time
build oss-fuzz fuzzers	3m 3s
dpdk gcc (ubuntu-24.04)	6s
libreswan (ubuntu-24.04)	6s
osx clang --disable-ssl	1m 54s
linux deb no dpdk	5m 27s
linux rpm fedora	4m 11s
clang-analyze-cache	12m 40s
linux gcc c99	2m 50s
linux clang --disable-ssl	2m 41s
linux gcc test	8m 32s
linux clang c99	2m 59s
linux gcc --disable-ssl	2m 41s
linux clang address,undefined test	16m 36s
linux gcc test -ljemalloc	8m 55s
linux gcc dpdk-shared --enable-shared	3m 29s
linux clang --enable-afxdp	2m 36s
linux gcc --enable-afxdp	2m 45s
linux clang check check-dpdk dpdk	20m 14s
linux clang test -ljemalloc	9m 9s
linux gcc dpdk --enable-shared	3m 35s
linux clang dpdk-shared --enable-shared	3m 56s
linux clang test --enable-shared	11m 23s
linux gcc test --enable-shared	11m 18s
linux gcc check-kernel 100-	17m 33s
linux gcc check check-dpdk dpdk	20m 7s
linux gcc dpdk-shared	2m 47s
linux clang address,undefined dpdk check-system-userspace	16m 58s
linux clang dpdk --enable-shared	3m 54s
linux gcc check-ovsdb-cluster	6m 51s
linux gcc check-kernel -100	10m 19s
linux clang dpdk-shared	3m 14s
linux gcc check-offloads -100	9m 21s
linux clang address,undefined check-kernel -100	12m 57s
linux gcc dpdk check-system-tso	12m 55s
linux gcc dpdk check-afxdp	12m 41s
linux gcc check-offloads 100-	13m 0s
linux gcc dpdk check-system-userspace	13m 3s
linux clang address,undefined check-kernel 100-	20m 7s
linux gcc m32 --disable-ssl	3m 33s
clang-analyze	10m 29s
	5h 30m 55s

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