Add python-devel as buildrequires
Add python-devel as buildrequires

The spec file assume python is available in the buildroot, in our case it is not by default.

According to fedora/rhel convention BuildRequires:  python-devel is needed.

If we are targeting also rhel5 we python-devel otherwise it can be python2-devel
tofu-rocketry/ssm,stfc/ssm,apel/ssm,tofu-rocketry/ssm,stfc/ssm,apel/ssm