Do not allow metadata.creationTimestamp to affect sync status

[jessesuen]

Resolves #1009

[codecov-io]

Codecov Report

Merging #1021 into master will increase coverage by 0.11%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1021      +/-   ##
==========================================
+ Coverage   36.42%   36.54%   +0.11%     
==========================================
  Files          51       51              
  Lines        7363     7364       +1     
==========================================
+ Hits         2682     2691       +9     
+ Misses       4278     4272       -6     
+ Partials      403      401       -2

Impacted Files	Coverage Δ
util/diff/diff.go	66.66% <100%> (+2.7%)	⬆️
server/server.go	46.43% <0%> (+0.73%)	⬆️

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