Update vendor to regroup by root commands

[sethvargo]

Before:

Usage: consul [--version] [--help] <command> [<args>]

Available commands are:
    agent                            Runs a Consul agent
    catalog                          Interact with the catalog
    catalog datacenters              Lists all known datacenters
    catalog nodes                    Lists all nodes in the given datacenter
    catalog services                 Lists all registered services in a datacenter
    event                            Fire a new event
    exec                             Executes a command on Consul nodes
    force-leave                      Forces a member of the cluster to enter the "left" state
    info                             Provides debugging information for operators.
    join                             Tell Consul agent to join cluster
    keygen                           Generates a new encryption key
    keyring                          Manages gossip layer encryption keys
    kv                               Interact with the key-value store
    kv delete                        Removes data from the KV store
    kv export                        Exports a tree from the KV store as JSON
    kv get                           Retrieves or lists data from the KV store
    kv import                        Imports a tree stored as JSON to the KV store
    kv put                           Sets or updates data in the KV store
    leave                            Gracefully leaves the Consul cluster and shuts down
    lock                             Execute a command holding a lock
    maint                            Controls node or service maintenance mode
    members                          Lists the members of a Consul cluster
    monitor                          Stream logs from a Consul agent
    operator                         Provides cluster-level tools for Consul operators
    operator autopilot               Provides tools for modifying Autopilot configuration
    operator autopilot get-config    Display the current Autopilot configuration
    operator autopilot set-config    Modify the current Autopilot configuration
    operator raft                    Provides cluster-level tools for Consul operators
    operator raft list-peers         Display the current Raft peer configuration
    operator raft remove-peer        Remove a Consul server from the Raft configuration
    reload                           Triggers the agent to reload configuration files
    rtt                              Estimates network round trip time between nodes
    snapshot                         Saves, restores and inspects snapshots of Consul server state
    snapshot inspect                 Displays information about a Consul snapshot file
    snapshot restore                 Restores snapshot of Consul server state
    snapshot save                    Saves snapshot of Consul server state
    validate                         Validate config files/directories
    version                          Prints the Consul version
    watch                            Watch for changes in Consul

After:

Usage: consul [--version] [--help] <command> [<args>]

Available commands are:
    agent          Runs a Consul agent
    catalog        Interact with the catalog
    event          Fire a new event
    exec           Executes a command on Consul nodes
    force-leave    Forces a member of the cluster to enter the "left" state
    info           Provides debugging information for operators.
    join           Tell Consul agent to join cluster
    keygen         Generates a new encryption key
    keyring        Manages gossip layer encryption keys
    kv             Interact with the key-value store
    leave          Gracefully leaves the Consul cluster and shuts down
    lock           Execute a command holding a lock
    maint          Controls node or service maintenance mode
    members        Lists the members of a Consul cluster
    monitor        Stream logs from a Consul agent
    operator       Provides cluster-level tools for Consul operators
    reload         Triggers the agent to reload configuration files
    rtt            Estimates network round trip time between nodes
    snapshot       Saves, restores and inspects snapshots of Consul server state
    validate       Validate config files/directories
    version        Prints the Consul version
    watch          Watch for changes in Consul

[slackpad]

Thanks!