Normalize etherchannel, lacp, and portchannel capture groups

[mjbear]

-- Breaking Change --

This was done to make life easier when working with structured data from multiple vendors. Predictable capture group names for common items equals less "hacky code" to handle the structured data. (Trying to keep it DRY.)

• Normalize a number of capture group names for common data across the etherchannel, lacp, and portchannel templates (asa, ios, nxos, arista_eos)
• Normalize some cisco_nxos portchannel capture group regex to remove extra "captured" parentheses which became part of the structured data
  • (removing parentheses from being captured matches ios, asa, and arista_eos templates)

[mjbear]

rebased against NTC master branch to bring the git history up to current