Added version command

[yindia]

TL;DR

Added version command. It should return flytectl and flyteadmin version.

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

Tracking Issue

flyteorg/flyte#173

Follow-up issue

[yindia]

@kumare3 pr is ready you can review it.

[codecov]

Codecov Report

Merging #41 (628b2a1) into master (0b5ef91) will increase coverage by 0.20%.
The diff coverage is 53.57%.

❗ Current head 628b2a1 differs from pull request most recent head fee1989. Consider uploading reports for the commit fee1989 to get more accurate results

@@            Coverage Diff             @@
##           master      #41      +/-   ##
==========================================
+ Coverage   45.77%   45.98%   +0.20%     
==========================================
  Files          34       35       +1     
  Lines        1018     1046      +28     
==========================================
+ Hits          466      481      +15     
- Misses        482      491       +9     
- Partials       70       74       +4     

Flag	Coverage Δ
unittests	?

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Impacted Files	Coverage Δ
cmd/version/version.go	53.57% <53.57%> (ø)

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[yindia]

@EngHabu currently we are printing output of version command in log. Do you have any suggestions?

➜  flytectl git:(version) ✗ ./bin/flytectl version
Warn: No metricsProvider set for the workqueue
INFO[0000] Using config file: [config.yaml]             
INFO[0000] Config section [adminutils] updated. No update handler registered.  src="viper.go:318"
INFO[0000] Config section [root] updated. No update handler registered.  src="viper.go:318"
INFO[0000] Config section [logger] updated. Firing updated event.  src="viper.go:320"
{"json":{"src":"viper.go:320"},"level":"info","msg":"Config section [admin] updated. Firing updated event.","ts":"2021-03-27T01:15:03+05:30"}
{"json":{"src":"viper.go:318"},"level":"info","msg":"Config section [storage] updated. No update handler registered.","ts":"2021-03-27T01:15:03+05:30"}
{"json":{"src":"client.go:30"},"level":"info","msg":"Initialized Admin client","ts":"2021-03-27T01:15:03+05:30"}
{"json":{},"level":"info","msg":"------------------------------------------------------------------------","ts":"2021-03-27T01:15:03+05:30"}
{"json":{},"level":"info","msg":"App [flytectl], Version [43f10a7], BuildSHA [43f10a7], BuildTS [2021-03-27 01:15:03.871811 +0530 IST m=+0.081155335]","ts":"2021-03-27T01:15:03+05:30"}
{"json":{},"level":"info","msg":"------------------------------------------------------------------------","ts":"2021-03-27T01:15:03+05:30"}
{"json":{},"level":"info","msg":"------------------------------------------------------------------------","ts":"2021-03-27T01:15:03+05:30"}
{"json":{},"level":"info","msg":"App [flyteadmin], Version [v0.3.7-47-gfa70a14], BuildSHA [fa70a14], BuildTS [2021-03-26 19:41:13.043553376 +0000 UTC m=+0.352678459]","ts":"2021-03-27T01:15:03+05:30"}
{"json":{},"level":"info","msg":"------------------------------------------------------------------------","ts":"2021-03-27T01:15:03+05:30"}

[EngHabu]

You can also set formatter to Text if the goal is to see this in a terminal (will look nicer):
https://github.com/flyteorg/flytestdlib/blob/master/logger/config.go#L27

[EngHabu]

plz use logger from stdlib...

[yindia]

@EngHabu I can make these changes....but it's a command....we can't add its output in the log. I found that flytestdlib version package only prints the version in the log(We need to set the log level to print output). Printing log in JSON formate is not the solution in this case because it's log, not a output of a command