Formatting

Signed-off-by: Tim Jarratt <tjarratt@pivotallabs.com>
Fix spec description

Signed-off-by: Tim Jarratt <tjarratt@pivotallabs.com>
AsUser creates an isolated CF_HOME and restores the value on exit

Signed-off-by: Tim Jarratt <tjarratt@pivotallabs.com>