Single axis tracker systems with ghi, etc might fail to calculate

[sentry]

Probably related to the incorrect handling of singleton arrays overall.

Sentry Issue: RQ-WORKER-3

ValueError: Length of passed values is 1, index implies 16800.
(8 additional frame(s) were not displayed)
...
  File "pvlib/irradiance.py", line 781, in haydavies
    AI = dni / dni_extra
  File "pandas/core/ops/common.py", line 65, in new_method
    return method(self, other)
  File "pandas/core/ops/__init__.py", line 345, in wrapper
    return left._construct_result(result, name=res_name)
  File "pandas/core/series.py", line 2769, in _construct_result
    out = self._constructor(result, index=self.index)
  File "pandas/core/series.py", line 313, in __init__
    raise ValueError(

Error for job UUID('d31a5277-663d-11eb-960d-0afeb1772d65')

[wholmgren]

pvlib/pvlib-python#1160 should fix this and is included in pvlib 0.9.0a3