Add summary view to the bunch of workflows.

gso/workflows/iptrunk/create_iptrunk.py

gso/workflows/iptrunk/modify_isis_metric.py

gso/workflows/router/create_router.py

gso/workflows/shared.py

gso/workflows/site/create_site.py

test/workflows/iptrunk/test_create_iptrunk.py

test/workflows/iptrunk/test_modify_isis_metric.py

test/workflows/router/test_create_router.py

test/workflows/site/test_create_site.py

test/workflows/site/test_modify_site.py