cilium: various fixes to 06-lb test
cilium: various fixes to 06-lb test

Fix various things in the 06-lb test case: --backend does not exist
anymore, we need to switch to --backends instead. Same for `cilium
service inspect` that should have been `cilium service get` command.
Comparing the deletion result from `cilium service delete` has changed
to display the id as well. Thus, adapt results to compare against.
The `IPV4=1; ./06-lb.sh` subtests seems to have some logical bugs,
f.e. we add a legit service with id 10 and later on still expect the
`cilium service list` to be empty, but right in the subsequent check
we test whether the service with id 10 was the only one present?!
The later added service with id 20 has a conflicting frontend vip,
so that one cannot succeed. The `cilium endpoint ct dump` doesn't
exist anymore, so just comment it out. Add a `cilium service list`
after setting up the v4/v6 lb, so we can inspect the mappings.

Fixes: c7d4002534d6 ("Switch to spf13/cobra and spf13/viper to implement CLI & config")
Signed-off-by: Daniel Borkmann <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@cilium.io>

gumpt/cilium,scanf/cilium,cilium/cilium,tgraf/cilium,mskarbek/cilium,gumpt/cilium,tklauser/cilium,mskarbek/cilium,tgraf/cilium,michi-covalent/cilium,eloycoto/cilium,tgraf/cilium,eloycoto/cilium,gumpt/cilium,michi-covalent/cilium,gumpt/cilium,michi-covalent/cilium,cilium/cilium,scanf/cilium,cilium-team/cilium,mskarbek/cilium,gumpt/cilium,mskarbek/cilium,mskarbek/cilium,mskarbek/cilium,scanf/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,scanf/cilium,gumpt/cilium,tklauser/cilium,eloycoto/cilium,michi-covalent/cilium,cilium/cilium,scanf/cilium,eloycoto/cilium,gumpt/cilium,tgraf/cilium,scanf/cilium,tgraf/cilium,eloycoto/cilium,tklauser/cilium,cilium-team/cilium,eloycoto/cilium,tklauser/cilium,cilium/cilium,cilium/cilium,scanf/cilium,eloycoto/cilium