Change where set_attr is called in _define_atomic_symbol_creator
Change where set_attr is called in _define_atomic_symbol_creator

Where `set_attr` was originally called in
`_define_atomic_symbol_creator` would cause `list_attr` to return a
dictionary with extra bias and weight fields as seen here: `
Dict{Symbol,ByteString}(:convolution0_a=>"a",:convolution0_π=>"π",:convolution0_bias_a=>"a",:convolution0_weight_π=>"π",:convolution0_bias_π=>"π",:convolution0_weight_a=>"a",:data2_test=>"hallo!")
`

The test still fails however as `list_attr` still contains the name of
the source before the key.

eric-haibin-lin/mxnet,dmlc/mxnet,zhreshold/mxnet,dmlc/mxnet,apache/incubator-mxnet,sxjscience/mxnet,leezu/mxnet,dmlc/mxnet,szha/mxnet,ptrendx/mxnet,szha/mxnet,mbaijal/incubator-mxnet,mbaijal/incubator-mxnet,sxjscience/mxnet,leezu/mxnet,ForkedReposBak/mxnet,tlby/mxnet,eric-haibin-lin/mxnet,ForkedReposBak/mxnet,zhreshold/mxnet,sxjscience/mxnet,tlby/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,ForkedReposBak/mxnet,yajiedesign/mxnet,zhreshold/mxnet,DickJC123/mxnet,larroy/mxnet,reminisce/mxnet,ptrendx/mxnet,ForkedReposBak/mxnet,larroy/mxnet,leezu/mxnet,dmlc/mxnet,dmlc/mxnet,tlby/mxnet,szha/mxnet,larroy/mxnet,sxjscience/mxnet,szha/mxnet,leezu/mxnet,sxjscience/mxnet,dmlc/mxnet,eric-haibin-lin/mxnet,szha/mxnet,reminisce/mxnet,ForkedReposBak/mxnet,ptrendx/mxnet,apache/incubator-mxnet,tlby/mxnet,DickJC123/mxnet,dmlc/mxnet,tlby/mxnet,apache/incubator-mxnet,tlby/mxnet,reminisce/mxnet,apache/incubator-mxnet,yajiedesign/mxnet,reminisce/mxnet,larroy/mxnet,DickJC123/mxnet,sxjscience/mxnet,mbaijal/incubator-mxnet,ptrendx/mxnet,tlby/mxnet,leezu/mxnet,szha/mxnet,szha/mxnet,dmlc/mxnet,ForkedReposBak/mxnet,JuliaPackageMirrors/MXNet.jl,larroy/mxnet,reminisce/mxnet,yajiedesign/mxnet,zhreshold/mxnet,reminisce/mxnet,leezu/mxnet,yajiedesign/mxnet,yajiedesign/mxnet,mbaijal/incubator-mxnet,yajiedesign/mxnet,szha/mxnet,szha/mxnet,ptrendx/mxnet,mbaijal/incubator-mxnet,eric-haibin-lin/mxnet,mbaijal/incubator-mxnet,tlby/mxnet,zhreshold/mxnet,tlby/mxnet,sxjscience/mxnet,larroy/mxnet,reminisce/mxnet,reminisce/mxnet,eric-haibin-lin/mxnet,mbaijal/incubator-mxnet,sxjscience/mxnet,eric-haibin-lin/mxnet,mbaijal/incubator-mxnet,eric-haibin-lin/mxnet,reminisce/mxnet,ptrendx/mxnet,ptrendx/mxnet,larroy/mxnet,leezu/mxnet,larroy/mxnet,zhreshold/mxnet,ptrendx/mxnet,larroy/mxnet,zhreshold/mxnet,sxjscience/mxnet,yajiedesign/mxnet,yajiedesign/mxnet,reminisce/mxnet,mbaijal/incubator-mxnet,leezu/mxnet,zhreshold/mxnet,DickJC123/mxnet,eric-haibin-lin/mxnet,ForkedReposBak/mxnet,tlby/mxnet,zhreshold/mxnet,ForkedReposBak/mxnet,ptrendx/mxnet,ptrendx/mxnet,eric-haibin-lin/mxnet,leezu/mxnet,dmlc/mxnet