go: Unify CLI tools' version display

[tjanez]

No description provided.

[codecov]

Codecov Report

Merging #3233 into master will increase coverage by 0.11%.
The diff coverage is 85.71%.

@@            Coverage Diff             @@
##           master    #3233      +/-   ##
==========================================
+ Coverage   67.47%   67.58%   +0.11%     
==========================================
  Files         370      370              
  Lines       36379    36386       +7     
==========================================
+ Hits        24546    24591      +45     
+ Misses       8662     8629      -33     
+ Partials     3171     3166       -5     

Impacted Files	Coverage Δ
go/oasis-node/cmd/common/common.go	54.54% <85.71%> (+1.60%)	⬆️
go/consensus/tendermint/api/errors.go	86.66% <0.00%> (-13.34%)	⬇️
go/runtime/scheduling/simple/simple.go	79.68% <0.00%> (-6.25%)	⬇️
go/keymanager/client/client.go	82.64% <0.00%> (-5.79%)	⬇️
.../consensus/tendermint/apps/epochtime_mock/state.go	78.72% <0.00%> (-4.26%)	⬇️
go/storage/mkvs/insert.go	87.75% <0.00%> (-4.09%)	⬇️
go/storage/mkvs/tree.go	89.28% <0.00%> (-3.58%)	⬇️
go/storage/api/root_cache.go	77.77% <0.00%> (-3.18%)	⬇️
go/runtime/committee/nodes.go	76.47% <0.00%> (-1.97%)	⬇️
go/worker/common/committee/group.go	79.24% <0.00%> (-1.89%)	⬇️
... and 21 more

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