Update 5.2.9_cr_vmware.md

Add note for those who might run into permission issues while using VCenter with Foreman.
(cherry picked from commit ca9f6f4a134b791fed3e08fe9fc5e02ced95f622)
clarification on TFTP workflow

Added clarification on what is needed to trigger the TFTP workflow
(cherry picked from commit fc14dbfd2b941b2f812295c580c2b926ef872cae)
Update release notes
Link redmine issues