Cleanup and organize app tests
add build date time to the --version message

[Finishes #71446932]
Add a shell script to fetch tools

We expect to use most or all of us these in our CI pipeline soon.
Bump candied yaml

Props to @fraenekl
cf version now reports iso8601 date

This is the datetime that the binary was built in our CI environment

[Finishes #71446932]
Rewrite commands test runner interface

Took about an hour with judicious use of perl regex and emacs macros.

This change is very very useful in my opinion because it removes one
the last remaining places where we felt we needed to repeat the command
name as a string literal. It was unlikely this would ever change in the
future but it made our test setup very odd. Now testcmd.RunCommand
just exposes an interface to run a command with some args and he constructs
the context necessary.
Add v6.1.2 changelog items
FakeAppInstancesRepo should be easier to use

The behavior before was that each time you called GetInstances, it would slice off
one of the responses and errors from its slick of mock responses. Eventually there
would be nothing left and it would just return you the zero-value for the
response and error, which made it fairly difficult to use this in practice
because we poll this repo over and over again in practice.
Fix a source of flakiness in start_test.go

The problem here was that we made it possible for the error returned by the api
to be ignored if the staging timeout is set to an incredibly short duration.

Moving the error check outside of the forloop is just crazy enough to work.

[Finishes #71778246]
Cleanup start_test a bit

Forgot that we had all of these It("TestSomethingSomething", func() { }) still
hanging out in our codebase.
Cleanup a bunch of pre-ginkgo tests

[#68475822]
Fixing french translation

[Finishes #70551274]
Move Translation function outside DeleteQuota struct
Cleanup unset_org_role test

[#68475822]
Cleanup space-users test

[#68475822]
Cleanup set space role test

[#68475822]
cleanup set-org-role tests

[#68475822]
cleanup org-users test

[#68475822]
cleanup space command test

[#68475822]
Cleanup spaces command tests

[#68475822]