Bump version to 3.1m3
Bump version to 3.1m3

ShayHassidim/cloudify-nodecellar-example,EarthmanT/cloudify-nodecellar-example,yoramw/cloudify-nodecellar-example,yoramw/cloudify-nodecellar-example,EarthmanT/cloudify-nodecellar-example,cloudify-cosmo/cloudify-nodecellar-example,cloudify-cosmo/cloudify-nodecellar-example,ShayHassidim/cloudify-nodecellar-example