tests: regression: fix warnings related to range listing

tests: regression: fix warnings related to range listing

Fix lots of warnings, mostly related to the listing of ranges in many of the
tests that we have, eg.

any/meta.t: WARNING: line: 30: 'nft add rule ip test-ip4 input meta l4proto 33-45': 'meta l4proto 33-45' mismatches 'meta l4proto 33-45'
any/meta.t: WARNING: line: 31: 'nft add rule ip test-ip4 input meta l4proto != 33-45': 'meta l4proto != 33-45' mismatches 'meta l4proto != 33-45'
any/meta.t: WARNING: line: 99: 'nft add rule ip test-ip4 input meta skuid 3001-3005 accept': 'meta skuid 3001-3005 accept' mismatches 'skuid 3001-3005 accept'
any/meta.t: WARNING: line: 100: 'nft add rule ip test-ip4 input meta skuid != 2001-2005 accept': 'meta skuid != 2001-2005 accept' mismatches 'skuid != 2001-2005 accept'
any/meta.t: WARNING: line: 111: 'nft add rule ip test-ip4 input meta skgid 2001-2005 accept': 'meta skgid 2001-2005 accept' mismatches 'skgid 2001-2005 accept'
any/meta.t: WARNING: line: 112: 'nft add rule ip test-ip4 input meta skgid != 2001-2005 accept': 'meta skgid != 2001-2005 accept' mismatches 'skgid != 2001-2005 accept'
any/meta.t: WARNING: line: 156: 'nft add rule ip test-ip4 input meta cpu 1-3': 'meta cpu 1-3' mismatches 'cpu 1-3'
any/meta.t: WARNING: line: 158: 'nft add rule ip test-ip4 input meta cpu != 1-2': 'meta cpu != 1-2' mismatches 'cpu != 1-2'
any/meta.t: WARNING: line: 187: 'nft add rule ip test-ip4 input meta cgroup 0x100001 - 0x100003': 'meta cgroup 0x100001 - 0x100003' mismatches 'cgroup 1048577-1048579'
...

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>