Update spec files Source0

The Source0 currently does not lead to the correct source file.
This updates the spec file and renames the source to what would be
the expected source name.

ref pulp#2784
https://pulp.plan.io/issues/2784

pulp.spec

@@ -31,17 +31,22 @@
 # Required gofer version
 %global gofer_version 2.5
 
+# The release number
+%global release_number 0.1.alpha
+
+# Create tag for the Source0 and setup
+%global git_tag %{name}-%{version}-%{release_number}
 
 # ---- Pulp Platform -----------------------------------------------------------
 
 Name: pulp
 Version: 2.14.0
-Release: 0.1.alpha%{?dist}
+Release: %{release_number}%{?dist}
 Summary: An application for managing software content
 Group: Development/Languages
 License: GPLv2
-URL: https://fedorahosted.org/pulp/
-Source0: https://github.com/%{name}/%{name}/archive/%{name}-%{version}.tar.gz
+URL: http://pulpproject.org/
+Source0: https://codeload.github.com/pulp/%{name}/tar.gz/%{git_tag}#/%{name}-%{version}.tar.gz
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildArch: noarch
 BuildRequires: python2-devel
@@ -59,7 +64,7 @@ BuildRequires: rpm-python
 Pulp provides replication, access, and accounting for software repositories.
 
 %prep
-%setup -q
+%setup -q -n %{name}-%{git_tag}
 
 %build
 for directory in agent bindings client_consumer client_lib common devel