For cases when the number of local processes is greater than the number of
available contexts, the SEP initialization phase would calculate the number of
contexts to provision for each rank to be 0 and would eventually crash.
Fix the issue here by using regular endpoints in the event the number of local
processes is more than available contexts. This fixes issue #6182.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@intel.com>