Added sanity check for parameter for CaptureBuildDuration.

[prasoon2211]

Added sanity check for report_in parameter in CaptureBuildDuration according to the commit message prasoon2211@64e0917#commitcomment-12982136 for PR #1824

[codecov-io]

Current coverage is 84.55%

Merging #1839 into master will not affect coverage as of 6bede93

@@            master   #1839   diff @@
======================================
  Files          320     320       
  Stmts        31105   31108     +3
  Branches         0       0       
  Methods          0       0       
======================================
+ Hit          26300   26302     +2
  Partial          0       0       
- Missed        4805    4806     +1

Review entire Coverage Diff as of 6bede93

---

Uncovered Suggestions

1. +0.10% via ...ot/status/builder.py#381...414
2. +0.09% via ...ot/status/builder.py#453...481
3. +0.09% via ...dbot/changes/mail.py#478...505
4. See 7 more...

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[prasoon2211]

@sa2ajj @stibbons Please review.