Disable unit tests again

python-2.7.8-7 causes this package's unit tests to fail, so for now we
Will disable them again until that issue is resolved.

https://bugzilla.redhat.com/show_bug.cgi?id=1161166#c4

python-boto.spec

@@ -1,12 +1,11 @@
 %if 0%{?fedora}
 %bcond_without python3
-%bcond_without unittests
 %else
 %bcond_with python3
-# EPEL currently lacks python-httpretty
-%bcond_with unittests
 %endif
 
+%bcond_with unittests
+
 %{!?__python2: %global __python2 /usr/bin/python2}
 %{!?python2_sitelib: %global python2_sitelib %(%{__python2} -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())")}
 %if %{with python3}
@@ -170,6 +169,7 @@ popd
 %changelog
 * Fri Nov  7 2014 Garrett Holmstrom <gholms@fedoraproject.org> - 2.34.0-2
 - Added missing python-requests and python-rsa dependencies
+- Disabled unit tests due to rawhide/F21 python regression (RH #1161166:c4)
 
 * Fri Nov  7 2014 Garrett Holmstrom <gholms@fedoraproject.org> - 2.34.0-1
 - Updated to 2.34.0 (RH #1072925, RH #1072928, RH #1161229)