Update pymod2pkg to 0.16.0

Switch to use stestr. Also converting it to singlespec by
incorporating the changes from
https://review.openstack.org/#/c/597062/

Change-Id: Ic942bc12320e1f8149d89dcd149896127b006df9

openstack/pymod2pkg/pymod2pkg.spec.j2

@@ -1,59 +1,70 @@
 %global sname pymod2pkg
-Name:           {{ py2name('pymod2pkg') }}
-Version:        0.14.0
-Release:        0
+{% set pypi_name = 'pymod2pkg' %}
+{% set upstream_version = upstream_version('0.16.0') %}
+{% set rpm_release = '1' %}
+{% set source = url_pypi() %}
+Name:           {{ py2name() }}
+Version:        {{ py2rpmversion() }}
+Release:        {{ py2rpmrelease() }}
 Summary:        OpenStack Packaging - python module name to package name map
 License:        {{ license('Apache-2.0') }}
 Group:          Development/Libraries/Python
 URL:            https://wiki.openstack.org/wiki/Rpm-packaging
-Source0:        https://files.pythonhosted.org/packages/source/p/%{sname}/%{sname}-%{version}.tar.gz
+Source0:        {{ source }}
 BuildRequires:  openstack-macros
-BuildRequires:  {{ py2pkg('devel') }}
-BuildRequires:  {{ py2pkg('pbr') }}
-BuildRequires:  {{ py2pkg('testrepository') }}
-BuildRequires:  {{ py2pkg('testscenarios') }}
-BuildRequires:  {{ py2pkg('testtools') }}
+BuildRequires:  {{ py2pkg('devel', py_versions=['py2', 'py3']) }}
+BuildRequires:  {{ py2pkg('pbr', py_versions=['py2', 'py3']) }}
+BuildRequires:  {{ py2pkg('stestr', py_versions=['py2', 'py3']) }}
+BuildRequires:  {{ py2pkg('testresources', py_versions=['py2', 'py3']) }}
+BuildRequires:  {{ py2pkg('testtools', py_versions=['py2', 'py3']) }}
 Requires:       {{ py2pkg('pbr') }}
 BuildArch:      noarch
+%python_subpackages
 
 %description
 pymod2pkg is a simple python module for translating python module names to
 corresponding package names which is a common problem in the packaging world.
 
-%package doc
+%package -n {{ py2name() }}-doc
 Summary:        Documentation for python module name to package name map library
 BuildRequires:  {{ py2pkg('Sphinx') }}
 BuildRequires:  {{ py2pkg('oslosphinx') }}
-Requires:       %{name} = %{version}
 
-%description doc
+%description -n {{ py2name() }}-doc
 Documentation for python module name to package name map library.
 
 %prep
-%autosetup -n %{sname}-%{version}
+%autosetup -p1 -n {{ pypi_name }}-{{ upstream_version }}
 %py_req_cleanup
 
 %build
-%{py2_build}
+%{python_build}
+
 # generate html docs
 %{__python2} setup.py build_sphinx
 # remove the sphinx-build leftovers
 rm -rf doc/build/html/.{doctrees,buildinfo}
 
 %install
-%{py2_install}
+%{python_install}
+%python_clone -a %{buildroot}%{_bindir}/pymod2pkg
 
 %check
-%{__python2} setup.py test
+%python_exec -m stestr.cli run
 
-%files
+%post
+%python_install_alternative pymod2pkg
+
+%postun
+%python_uninstall_alternative pymod2pkg
+
+%files %{python_files}
 %license LICENSE
 %doc README*
-%{_bindir}/pymod2pkg
-%{python2_sitelib}/%{sname}*
-%{python2_sitelib}/*.egg-info
+%python_alternative %{_bindir}/pymod2pkg
+%{python_sitelib}/*
 
-%files doc
+%files -n {{ py2name() }}-doc
 %doc doc/build/html
 %license LICENSE