Report path optimization and computed metrics in PCEP

We report PCEP path optimization metrics (IGP, TE, and delay) for RSVP and segment routing-traffic engineering (SR-TE) label-switched paths (LSPs). To configure the interior gateway protocol (IGP), traffic engineering, and path delay optimization metrics for RSVP LSPs, include the metric-type igp|te|delay|delay minimum CLI statement at the [edit protocols mpls label-switched-path lsp-name ] hierarchy level. To configure the optimization metrics for SR-TE LSPs, include the metric-type igp|te|delay|delay minimum CLI statement at the [edit protocols source-packet-routing compute-profile compute-profile-name ] hierarchy level.