bgpd : Ambiguous command: show bgp large-community-list 1

bgpd : Ambiguous command: show bgp large-community-list 1

When user wants to dump individual large-community-list with the name
then bgp throws an error. It is due to command to dump the bgp RIB routes
having a particular large-community-list values. To segregate both the
commands this fix has added the detail keyword in the below command.
show bgp large-community-list <(1-500)|WORD> detail
The same code change is applicable for community-list also.

Signed-off-by: vishaldhingra<vdhingra@vmware.com>