Add a way to send build options for a package to py2rpm

In order to work around the pylint byte code compliation
issues, allow the distro yaml file to provide a set of
options that will be placed along to py2rpm that will then
be used when building (in this case the option that
disables byte code compilation will be used since pylint
has test case bytecode that won't correctly compile under
older versions of python).

Change-Id: I083069deca2e84b657ace6e04ce6dd911185553d
Merge "Add a way to send build options for a package to py2rpm"