show-space quotes integer and doesn't work with id as argument

[Richard Harding]

Some feedback on the show-space cli tool

show-space should also accept the space id. We list that first in the output and folks will try to do this

    juju spaces
    Space Name Subnets
    0 alpha
    1 default 10.0.0.0/24

    juju show-space 0
    {}
    ERROR cannot retrieve space "0": fetching space "space-0": space "0" not found

The space id I'm expecting to be an integer but it's output as a string?

    % juju show-space alpha
    space:
      id: "0"
      name: alpha
      subnets: []

Same with provider-id?

--help output tweaks

"Summary" Displays detailed information about a network space.

"Details"

Displays detailed information about a network space. Output includes the space subnets, applications with bindings to the space, and a count of machines connected to the space.

(if we have the verbose option still that was discussed we should include an example of that using the template below)
Examples:
<blank line>
Text explaining next example (ending in a colon).
<blank line>
<indent><command>
<blank line>

[Nam Nguyen (nammn)]

Provider-ID and ID were strings before in the other commands as well.
Internally we parse the ID as a string everywhere. Should we change that for the output?

E.g. (note that the default output of show-space is yaml)
juju spaces --format=yaml
juju list-machines --format yaml

[Nam Nguyen (nammn)]

a WIP PR https://github.com/juju/juju/pull/11195/

[Nam Nguyen (nammn)]

After discussions with rharding we decided to omit the feature to search for ID.

The patch above only includes doc updates for cli examples.