PCEP multipath support for SR-TE

You can configure the multipath feature (primary or secondary paths) for Path Computation Element Protocol (PCEP) segment routing-traffic engineering (SR-TE) as defined in draft-ietf-pcemultipath-06. We support the following multipath capabilities: When the PCEP multipath feature is enabled, you can configure multiple primary or secondary paths in a candidate path that you configure and control using Path Computation Client (PCC).Note that the PCEP multipath feature is enabled by default. When the PCEP multipath feature is disabled, you can configure only one primary path in a candidate path. Note that a secondary path configuration is not allowed. The PCEP multipath feature removes the compute-profile restriction of 1 on the maximum number of segment lists (maximum-computed-segment-lists). NOTE: When PCEP multipath is enabled, PCCD will not send constraints for PCC-controlled candidate paths.