Correct typo in unmarshalling task failure_reason JSON
Correct typo in unmarshalling task failure_reason JSON

- Were getting an empty FailureReason field
- No spaces allowed in that json string conversion

[#111473134]

Signed-off-by: Jen Spinney <475b118f8db4f150e7ed3b69b35fd7c857f9c9f8@hpe.com>

matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests,matt-royal/cf-acceptance-tests