Matrix::MUL operators using and test Daoyuan's Paddle Function, SparseMatrixArg and Function Test

Remove unused init method in paddle::Trainer

V2 optimizer

Removed unused GradientMachine::create

change english documentation for parameter ports_num and ports_num_fo…

remove `allow_inefficient_sparse_update` since it's only defined but …

Function Adds some properties

added region check step, route53 config.

fix docker build

I am getting following error without this commit when doing docker build.

  File "<string>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/setuptools/__init__.py", line 12, in <module>
    import setuptools.version
  File "/usr/local/lib/python2.7/dist-packages/setuptools/version.py", line 1, in <module>
    import pkg_resources
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 70, in <module>
    import packaging.version
ImportError: No module named packaging.version

No idea why this change fix the problem, but it does fix.

paddle on aws with kubernetes tutorial now works

SparseGpuMatrix::mul(GpuMatrix, GpuMatrix),
CpuMatrix::mul(CpuSparseMatrix, CpuMatrix),
and GpuMatrix::mul(GpuSparseMatrix, GpuMatrix)

and GpuMatrix::mul(CpuMatrix, GpuSparseMatrix)

Fix destroy error in test_ProtoServer.