Added requirements.txt
Added requirements.txt

The cireporter.py script uses shyaml.

Change-Id: I2ae61daf5b8d91a6c792be78485a2fb2b1b8806e

openstack/third-party-ci-tools,openstack/third-party-ci-tools,stackforge/third-party-ci-tools,stackforge/third-party-ci-tools,openstack/third-party-ci-tools,openstack/third-party-ci-tools,stackforge/third-party-ci-tools,openstack/third-party-ci-tools,stackforge/third-party-ci-tools,stackforge/third-party-ci-tools