Merge pull request #12819 from isabelladeleon12/isis_load_config_before_lsp_gen

isisd: Delay lsp generation to after config processing is complete

diff --cc isisd/isis_lsp.c
Simple merge

diff --cc isisd/isis_main.c
Simple merge

diff --cc isisd/isisd.c
Simple merge

diff --cc isisd/isisd.h
Simple merge