Implements PBR for packaging

Spyglass will soon have its plugins separated from its main repo. Many
other OpenStack repositories that utilize plugins have implemented
Python Build Reasonableness to manage their entry points for plugins.
As Spyglass will be managing plugins, it makes sense to stay uniform
with other projects and implement PBR.

Implements PBR using setup.py and setup.cfg files.

Changes README to correct file extension.

Freezes PIP requirements file.

Moves YAPF configuration into setup.cfg file.

Change-Id: I48ac5aeb3e544d3da7ce25bd9b827d8fd9c4e108

.style.yapf

@@ -1,6 +0,0 @@
-[style]
-based_on_style = pep8
-allow_split_before_dict_value = false
-blank_line_before_nested_class_or_def = true
-blank_line_before_module_docstring = true
-split_before_logical_operator = false

requirements.txt

@@ -1,7 +1,8 @@
+click==7.0
 jinja2==2.10
-jsonschema
-netaddr
+jsonschema==3.0.1
 openpyxl==2.5.4
+netaddr==0.7.19
 pyyaml==3.12
-requests
-click
+requests==2.21.0
+six==1.12.0

setup.cfg

@@ -0,0 +1,38 @@
+[metadata]
+name = spyglass
+version = 0.0.1
+summary = Airship Manifest Generation
+description = Tool to generate Airship documents from data sources
+description-file = README.rst
+author = The Airship Authors
+author-email = airship-discuss@lists.airshipit.org
+home-page = https://opendev.org/airship/spyglass
+license = Apache-2
+requires-python = >=3.5
+classifier =
+    Intended Audience :: Information Technology
+    Intended Audience :: System Administrators
+    License :: OSI Approved :: Apache Software License
+    Operating System :: POSIX :: Linux
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+
+[files]
+packages =
+    spyglass
+
+[entry_points]
+console_scripts =
+    spyglass = spyglass.cli:main
+data_extractor_plugins =
+    tugboat = spyglass.data_extractor.plugins.tugboat.tugboat:TugboatPlugin
+    formation = spyglass.data_extractor.plugins.formation.formation:FormationPlugin
+
+[yapf]
+based_on_style = pep8
+allow_split_before_dict_value = false
+blank_line_before_nested_class_or_def = true
+blank_line_before_module_docstring = true
+split_before_logical_operator = false

setup.py

@@ -12,35 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from setuptools import find_packages
-from setuptools import setup
+import setuptools
 
-setup(
-    name='spyglass',
-    version='0.0.1',
-    description='Generate Airship specific yaml manifests from data sources',
-    url='https://opendev.org/airship/spyglass.git',
-    python_requires='>=3.5.0',
-    license='Apache 2.0',
-    packages=find_packages(),
-    install_requires=[
-        'jsonschema',
-        'Click',
-        'openpyxl',
-        'netaddr',
-        'pyyaml',
-        'jinja2',
-    ],
-    entry_points={
-        'console_scripts': [
-            'spyglass=spyglass.cli:main',
-        ],
-        'data_extractor_plugins': [
-            'formation='
-            'spyglass.data_extractor.plugins.formation:FormationPlugin',
-            'tugboat='
-            'spyglass.data_extractor.plugins.tugboat.tugboat:TugboatPlugin',
-        ]
-    },
-    include_package_data=True,
-)
+setuptools.setup(setup_requires=['pbr>=2.0.0'], pbr=True)