feat(iot): improve network create output

[yfodil]

feat #1437

[codecov-commenter]

Codecov Report

Merging #2584 (61bdce1) into master (ebbf6a8) will increase coverage by 0.48%.
The diff coverage is 83.78%.

@@            Coverage Diff             @@
##           master    #2584      +/-   ##
==========================================
+ Coverage   76.01%   76.49%   +0.48%     
==========================================
  Files         126      130       +4     
  Lines       22282    23758    +1476     
==========================================
+ Hits        16937    18173    +1236     
- Misses       4779     4990     +211     
- Partials      566      595      +29     

Impacted Files	Coverage Δ
internal/namespaces/iot/v1/custom_network.go	73.91% <73.91%> (ø)
internal/namespaces/iot/v1/custom.go	100.00% <100.00%> (ø)
internal/namespaces/iot/v1/custom_hub.go	100.00% <100.00%> (ø)
internal/namespaces/iot/v1/iot_cli.go	83.64% <0.00%> (ø)

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