Incorporate review comments

[sayboras]

Description

To incorporate review comments in #671

Testing

Sanity check was done locally with kind cluster to make sure there is no silly mistake :)

Sanity check

$ ./cilium sysdump         
🔍 Collecting Kubernetes nodes
🔍 Collect Kubernetes nodes
🔍 Collect Kubernetes version
🔍 Collecting Kubernetes pods
...
🔍 Collecting 'cilium-bugtool' output from Cilium pods
🔍 Collecting logs from Hubble pods
🔍 Collecting logs from Hubble Relay pods
🔍 Collecting platform-specific data
🔍 Collecting Hubble flows from Cilium pods
⚠️ The following tasks failed, the sysdump may be incomplete:
⚠️ [10] Collecting Cilium egress NAT policies: failed to collect Cilium egress NAT policies: the server could not find the requested resource (get ciliumegressnatpolicies.cilium.io)
⚠️ [11] Collecting Cilium local redirect policies: failed to collect Cilium local redirect policies: the server could not find the requested resource (get ciliumlocalredirectpolicies.cilium.io)
⚠️ [19] Collecting the Hubble Relay configuration: failed to collect the Hubble Relay configuration: configmaps "hubble-relay-config" not found
⚠️ hubble-flows-cilium-gnvqz: failed to collect hubble flows for "cilium-gnvqz" in namespace "kube-system": command terminated with exit code 1: failed to connect to 'unix:///var/run/cilium/hubble.sock': connection error: desc = "transport: error while dialing: dial unix /var/run/cilium/hubble.sock: connect: no such file or directory"

⚠️ Please note that depending on your Cilium version and installation options, this may be expected
🗳 Compiling sysdump
✅ The sysdump has been saved to /home/tammach/go/src/github.com/cilium/cilium-cli/cilium-sysdump-20220105-001818.zip

$ ls -lrht cilium-sysdump-20220105-001818.zip 
-rw-rw-r-- 1 tammach tammach 5.0M Jan  5 00:18 cilium-sysdump-20220105-001818.zip

[maintainer-s-little-helper]

Commits 33dccf4, ee61e82 do not contain "Signed-off-by".

Please follow instructions provided in https://docs.cilium.io/en/stable/contributing/development/contributing_guide/#developer-s-certificate-of-origin