netdev-offload: Use per packet tunnel metadata restore flag. #501

Job	Run time
dpdk gcc	2m 8s
linux deb ${{ matrix.dpdk }} dpdk	0s
linux rpm fedora	6m 23s
osx clang --disable-ssl	4m 7s
linux gcc --disable-ssl	3m 13s
linux clang --disable-ssl	3m 10s
linux gcc c99	3m 35s
linux clang c99	3m 21s
linux gcc test	3m 56s
linux clang test asan	5m 53s
linux clang test ubsan	5m 53s
linux gcc test --enable-shared	3m 36s
linux clang test --enable-shared	5m 51s
linux gcc test dpdk	2m 25s
linux clang test dpdk	3m 19s
linux gcc test -ljemalloc	3m 35s
linux clang test -ljemalloc	5m 53s
linux gcc --enable-afxdp	3m 12s
linux clang --enable-afxdp	3m 4s
linux gcc dpdk --enable-shared	2m 13s
linux clang dpdk --enable-shared	2m 20s
linux gcc dpdk-shared	2m 1s
linux clang dpdk-shared	1m 53s
linux gcc dpdk-shared --enable-shared	2m 47s
linux clang dpdk-shared --enable-shared	2m 11s
linux gcc dpdk-experimental	4m 42s
linux gcc m32 --disable-ssl	4m 4s
	1h 34m 45s

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