introduce spec file and related build scripts

The repository now contains a Vagrantfile for running the testing script
against an RPM package created locally using `make rpm`. To run this
test use `make vagrant-test`. setup.py was also modified to adhere to
packaging guidelines and not to install system-level executables.
The lincense is now included in the Python package using the MANIFEST.in
file.

Makefile

@@ -0,0 +1,39 @@
+PACKAGE_NAME=osbuild
+VERSION=1
+
+sdist:
+	python3 setup.py sdist
+	find `pwd`/dist -name '*.tar.gz' -printf '%f\n' -exec mv {} . \;
+
+tarball:
+	git archive --prefix=osbuild-$(VERSION)/ --format=tar.gz HEAD > $(VERSION).tar.gz
+
+srpm: $(PACKAGE_NAME).spec tarball
+	/usr/bin/rpmbuild -bs \
+	  --define "_sourcedir $(CURDIR)" \
+	  --define "_srcrpmdir $(CURDIR)" \
+	  $(PACKAGE_NAME).spec
+
+rpm: $(PACKAGE_NAME).spec tarball
+	mkdir -p "`pwd`/output"
+	mkdir -p "`pwd`/rpmbuild"
+	/usr/bin/rpmbuild -bb \
+	  --define "_sourcedir `pwd`" \
+	  --define "_specdir `pwd`" \
+	  --define "_builddir `pwd`/rpmbuild" \
+	  --define "_srcrpmdir `pwd`" \
+	  --define "_rpmdir `pwd`/output" \
+	  --define "_buildrootdir `pwd`/build" \
+	  $(PACKAGE_NAME).spec
+	find `pwd`/output -name '*.rpm' -printf '%f\n' -exec mv {} . \;
+	rm -r "`pwd`/rpmbuild"
+	rm -r "`pwd`/output"
+	rm -r "`pwd`/build"
+
+copy-rpms-to-test:
+	cp *.rpm test/
+
+vagrant-test: rpm copy-rpms-to-test
+	- $(MAKE) -C test up
+	- $(MAKE) -C test install-deps
+	$(MAKE) -C test run-tests-remotely