`renameDict` cannot be accessed by ObsCondition

[hangqianjun]

renameDict is meant to be a shared parameter between photErr and ObsCondition. The problem is ObsCondition checks whether the input is in photErr via

from photerr import LsstErrorParams
from dataclasses import fields
lsst_error_model_keys = [field.name for field in fields(LsstErrorParams)]

but renameDict is not in lsst_error_model_keys.

Solution: add renameDict in lsst_error_model_keys after calling the above lines.

[hangqianjun]

Will be included in #16