Move trending to the 15 minute mark to space out crons

[raymondjacobson]

Description

What is the purpose of this PR? What is the current behavior? New behavior? Relevant links (e.g. Trello) and/or information pertaining to PR?

Refreshing trending is expensive and so is sweeping / calculating metrics. No need to do these both at the hour on the dot.

Tests

List the manual tests and repro instructions to verify that this PR works as anticipated. Include log analysis if possible.
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[hareeshnagaraj]

looks good to me! is this to space out expensive db operations from the 0th minute? wondering if there's other stuff in a similar predicament

[raymondjacobson]

looks good to me! is this to space out expensive db operations from the 0th minute? wondering if there's other stuff in a similar predicament

Yeah exactly. There are two metrics jobs at the 0th minute, but those have time "sensitivity" since they care about metrics by the hour. Could move them too but a bit more complicated. This one was just easy.

[piazzatron]

great idea