Remove explicit space argument from space setup helper function

* Made private again

[#67336678]

Signed-off-by: James Myers <jmyers@pivotallabs.com>
Rearrange config parameter groups

[#67336678]

Signed-off-by: James Myers <jmyers@pivotallabs.com>
Update README with config file changes

* Skipping SSL validation
* Setting names for persistent-app test host/space/org/quota

Signed-off-by: James Myers <jmyers@pivotallabs.com>