APP-190 -- Updated status/list output times (added 'ago' at the end)

[aiordache]

Signed-off-by: Anca Iordache anca.iordache@docker.com

- What I did
Added 'ago' to the created/modified time in the status/list command output.

- How to verify it

Before:

$ docker app list
INSTALLATION APPLICATION         LAST ACTION RESULT  CREATED MODIFIED REFERENCE
hello-world  hello-world (0.1.0) install     success 3 hours 3 hours  

After:

$ docker app list
INSTALLATION APPLICATION         LAST ACTION RESULT  CREATED     MODIFIED    REFERENCE
hello-world  hello-world (0.1.0) install     success 3 hours ago 3 hours ago 

- Description for the changelog
Added 'ago' to status/list commands output times.

- A picture of a cute animal (not mandatory but encouraged)

[rumpl]

LGTM

[codecov]

Codecov Report

Merging #600 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #600      +/-   ##
=========================================
+ Coverage   72.36%   72.4%   +0.03%     
=========================================
  Files          54      54              
  Lines        2761    2765       +4     
=========================================
+ Hits         1998    2002       +4     
  Misses        506     506              
  Partials      257     257

Impacted Files	Coverage Δ
internal/commands/list.go	84.12% <100%> (+1.07%)	⬆️
internal/commands/status.go	83.33% <100%> (ø)	⬆️

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[silvin-lubecki]

LGTM 👍