BUG: PLP data load

[jklenzing]

Describe the bug When trying to load cnofs plp data, we get an error in pandas.

To Reproduce

import pysat
inst = pysat.Instrument('cnofs', 'plp')
inst.load(2009, 1)

yields

ValueError: ('Lengths must match to compare', (86400,), (1,))

Despite the error, data loads and can be inspected with plp.data

Expected behavior Data should load without error

Screenshots n/a

Desktop (please complete the following information):

• OS: Mac OS X 11.6.5
• Version: python 3.8.11
• pandas 1.4.2
• pysat: main, develop, load_meta_proc branches
• pysaNASA develop branch

Additional context See #113 for a similar problem

[jklenzing]

Root cause is treatment of metadata in older versions of cdflib. Already solved by #112.