rebase: update go-ceph to v0.7.0

updating go-ceph to latest 0.7.0
release.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/github.com/ceph/go-ceph/internal/cutil/cutil.go

@@ -1,14 +0,0 @@
-package cutil
-
-import "unsafe"
-
-// VoidPtr casts a uintptr value to an unsafe.Pointer value in order to use it
-// directly as a void* argument in a C function call.
-// CAUTION: NEVER store the result in a variable, or the Go GC could panic.
-func VoidPtr(i uintptr) unsafe.Pointer {
-	var nullPtr unsafe.Pointer
-	// It's not possible to cast uintptr directly to unsafe.Pointer. Therefore we
-	// cast a null pointer to uintptr and apply pointer arithmetic on it, which
-	// allows us to cast it back to unsafe.Pointer.
-	return unsafe.Pointer(uintptr(nullPtr) + i)
-}