PCE requests to allocate binding SIDs for SR-TE Colored LSPs

A Path Computation Element (PCE) can request Path Computation Client (PCC) to allocate a binding SID from PCC's label space. PCE can request PCC to allocate a specific binding SID and can also allocate binding SID of PCC's choice. 

The following PCEP operations are now supported: 

•  PCE requests PCC to allocate binding SID of PCC's choice for delegated LSPs 
•  PCE requests PCC to allocate binding SID of PCC's choice for PCE-Initiated LSPs 
•  PCE requests PCC to allocate a specific binding SID for delegated LSPs 
•  PCE requests PCC to allocate a specific binding SID for PCE-Initiated LSPs 
•  BGP LS for binding SID for colored SR LSP 

The following SRTE binding SID database and label show commands has been introduced to display all binding SIDs with brief and detail outputs: 

•  show spring-traffic-engineering binding-sid database brief 
•  show spring-traffic-engineering binding-sid database detail 
•  show spring-traffic-engineering binding-sid database label label brief 
•  show spring-traffic-engineering binding-sid database label label detail 
•  show spring-traffic-engineering binding-sid label label brief 
•  show spring-traffic-engineering binding-sid label label detail