Add snapshot time

[viko600]

Added snapshot creation time when the yb-admin list snapshot command is issuedalaigned

[CLAassistant]

All committers have signed the CLA.

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[sanketkedia]

Hey Viktor, Great work on these changes. They look good. Left one minor comment. Also, it'd be great if you can attach a screenshot of how the list_snapshots command looks like both without and with your change since this is user-facing. Also, if this is the first time you are contributing then it will be great to add your name to contributors file

Thank you!

[viko600]

Hi @sanketkedia and @OlegLoginov I have fixes the suggested errors and have made a screenshot with the 2 outputs of the list_snapshots command. For the first output I used my branch and for the second, I used the master branch.

[sanketkedia]

Hey @viko600, Some comments on code style, and then we are good to go.

[viko600]

I want to take another issue after this one is resolved. Should I only look for issues with the help wanted label, or an I free to chose from all the issues?

[OlegLoginov]

Looks good to me.

[sanketkedia]

@viko600 Backup tests are failing due to this change because they expect a strict format. I'll commit the change to fix them, run tests and then we'll probably be good to go.

[sanketkedia]

Adding screenshot of the behavior when the snapshot is in "CREATING" or "DELETING" state.

[sanketkedia]

@viko600 Tests look good, so accepting this PR. Also, cases like the behavior when the snapshot is in "CREATING" or "DELETING" state also work. I will merge it.

[sanketkedia]

I want to take another issue after this one is resolved. Should I only look for issues with the help wanted label, or an I free to chose from all the issues?

@viko600 We don't necessarily restrict from our end but the help wanted label is guidance on issues with less complicated fixes that are great for the OSS community. Also, do check with the issue creator/other people in the thread to see if somebody is already working on it. It could be that internally someone has already started working on it.