Added changelog entry for dynamic scheduler, along with general
information on scheduler framework and behaviour of particular
scheduler implemenations.
Change-Id: I9fcef56323c4be136b6b531297b070562981eee5
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6151
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
