Adding wheel dependency for python_pip packager

MANIFEST.in

@@ -1,6 +1,5 @@
 include LICENSE
-include requirements/base.txt
-include requirements/dev.txt
+include requirements/*
 recursive-include aws_lambda_builders/workflows *
 prune tests
 

requirements/python_pip.txt

@@ -0,0 +1,5 @@
+
+# Following packages are required by `python_pip` workflow to run.
+# TODO: Consider moving this dependency directly into the `python_pip` workflow module
+setuptools
+wheel

setup.py

@@ -55,7 +55,7 @@ def read_version():
             '{}=aws_lambda_builders.__main__:main'.format(cmd_name)
         ]
     },
-    install_requires=read_requirements('base.txt'),
+    install_requires=read_requirements('base.txt') + read_requirements("python_pip.txt"),
     extras_require={
         'dev': read_requirements('dev.txt')
     },