(PDB-3596) Add 4.4.0..5.0.1 release notes
(PDB-3596) Add 4.4.0..5.0.1 release notes

puppetlabs/puppetdb,puppetlabs/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,mullr/puppetdb,rbrw/puppetdb,rbrw/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,mullr/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,rbrw/puppetdb