tree 50eae791f07be33865a79d194bd6ce007a865dbf
parent 961c9d9cb05b8da1e4fa8f8e04872dad3b234879
author Matt Spinler <spinler@us.ibm.com> 1560892165 -0500
committer Matt Spinler <spinler@us.ibm.com> 1561057685 -0500

REST: method call: return D-Bus error desc

When invoking a D-Bus method call via the 'action' URL, return
the error that came back from the D-Bus call as opposed to just
hardcoding one.

Tested: A POST on /xyz/openbmc_project/dump/action/CreateDump when
        no more dumps can be created now returns:

{
  "data": {
    "description": "xyz.openbmc_project.Dump.Create.Error.QuotaExceeded"
  },
  "message": "Dump not captured due to a cap.",
  "status": "error"
}

Change-Id: Ifd0c97f82ff05842fa0f36ef3bb1aaba42ad7d49
Signed-off-by: Matt Spinler <spinler@us.ibm.com>