Ensure cfn-* scripts are installed to /usr/local/bin.

Fedora python prefix is /usr, not /usr/local. Also Fedora python
is not set up at all to handle modules installed to /usr/local.

Installing only the scripts to /usr/local/bin works fine on Fedora.

When heat-cfntools is installed with pip again, use the following:
pip install heat-cfntools --install-option="--install-scripts=/usr/local/bin"

Change-Id: Id11e923c25bd3161c91b2e5166f6ac3bf04c30a0
Merge "Ensure cfn-* scripts are installed to /usr/local/bin."