mount/fuse: Handle fd resolution failures

Backport from http://review.gluster.org/#/c/8402, BZ 1126048

Problem:
Even when the fd resolution failed, the fop is continuing on the
new graph which may not have valid inode. This lead to NULL layout
subvols in dht which lead to crash in fsync after graph migration.

Fix:
- Remove resolution error handling in FUSE_FOP as it was only added
  to handle fd migration failures.
- check in fuse_resolve_done for fd resolution failures and fail the
  fop right away.
- loc resolution failures are already handled in the corresponding
  fops.
- Return errno from state->resolve.op_errno in resume functions.
- Send error to fuse on frame allocation failures.
- Removed unused variable state->resolved
- Removed unused macro FUSE_FOP_COOKIE

Change-Id: I3f3129b9b4fc34ff1fe07218e6924a027346a95e
BUG: 1123289
Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.org/8562
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>