Fix TypeError (setRequestID, unexpected keyword argument) on AR Creation

[nihadness]

For detailed information about issue, see #325

Current behavior
ARs are created, but a Traceback occurs in the background.

Traceback:

Traceback (most recent call last):
  File "/Users/rbartl/develop/ridingbytes/liscon/liscon.lims/eggs/Products.Archetypes-1.9.17-py2.7.egg/Products/Archetypes/BaseObject.py", line 144, in initializeArchetype
    self.setDefaults()
  File "/Users/rbartl/develop/ridingbytes/liscon/liscon.lims/eggs/Products.Archetypes-1.9.17-py2.7.egg/Products/Archetypes/BaseObject.py", line 420, in setDefaults
    self.Schema().setDefaults(self)
  File "/Users/rbartl/develop/ridingbytes/liscon/liscon.lims/src/bika.lims/bika/lims/monkey/Schema.py", line 72, in setDefaults
    mapply(mutator, *args, **kw)
  File "/Users/rbartl/develop/ridingbytes/liscon/liscon.lims/eggs/Products.Archetypes-1.9.17-py2.7.egg/Products/Archetypes/utils.py", line 111, in mapply
    return method(*args, **kw)
  File "/Users/rbartl/develop/ridingbytes/liscon/liscon.lims/src/bika.lims/bika/lims/__init__.py", line 205, in wrapper
    return func(*args, **kwargs)
TypeError: setRequestID() got an unexpected keyword argument ‚mimetype‘

Expected behavior after this PR
ARs are created w/o Tracebacks

I justified why I added unused parameter to the method here:
#325 (comment)

[xispa]

I see this method is tagged as deprecated . I think would be better to find out where this function is called and replace the call by the one suggested in the deprecation message setId(new_id)

[nihadness]

since RequestID is a field in AR Schema, it is called by default while an AR object is being created. We do not call it anywhere from code currently.

[ramonski]

Indeed, the AR create process passes all field values to bika.lims.utils.analysisrequest.create_analysisrequest:
https://github.com/senaite/bika.lims/blob/senaite-integration/bika/lims/browser/analysisrequest/add2.py#L1748
which calls processForm method of the AR:
https://github.com/senaite/bika.lims/blob/senaite-integration/bika/lims/utils/analysisrequest.py#L75
As far as I know, this looks up the default mutator of the field and calls it with the given value. So we have to probably overwrite that default mutator in the Schema