Use indenting if supported by simplejson.
Use indenting if supported by simplejson.

Reviewed-by: iustinp



leshchevds/ganeti,andir/ganeti,ganeti/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,grnet/snf-ganeti,bitemyapp/ganeti,ganeti-github-testing/ganeti-test-1,onponomarev/ganeti,ganeti/ganeti,ganeti/ganeti,dimara/ganeti,apyrgio/snf-ganeti,mbakke/ganeti,yiannist/ganeti,yiannist/ganeti,leshchevds/ganeti,andir/ganeti,apyrgio/ganeti,yiannist/ganeti,bitemyapp/ganeti,mbakke/ganeti,apyrgio/snf-ganeti,onponomarev/ganeti,apyrgio/ganeti,mbakke/ganeti,grnet/snf-ganeti,andir/ganeti,leshchevds/ganeti