Bump libcompose and sync dependencies

vendor/github.com/cloudfoundry/gosigar/concrete_sigar.go

@@ -1,69 +0,0 @@
-package sigar
-
-import (
-	"time"
-)
-
-type ConcreteSigar struct{}
-
-func (c *ConcreteSigar) CollectCpuStats(collectionInterval time.Duration) (<-chan Cpu, chan<- struct{}) {
-	// samplesCh is buffered to 1 value to immediately return first CPU sample
-	samplesCh := make(chan Cpu, 1)
-
-	stopCh := make(chan struct{})
-
-	go func() {
-		var cpuUsage Cpu
-
-		// Immediately provide non-delta value.
-		// samplesCh is buffered to 1 value, so it will not block.
-		cpuUsage.Get()
-		samplesCh <- cpuUsage
-
-		ticker := time.NewTicker(collectionInterval)
-
-		for {
-			select {
-			case <-ticker.C:
-				previousCpuUsage := cpuUsage
-
-				cpuUsage.Get()
-
-				select {
-				case samplesCh <- cpuUsage.Delta(previousCpuUsage):
-				default:
-					// Include default to avoid channel blocking
-				}
-
-			case <-stopCh:
-				return
-			}
-		}
-	}()
-
-	return samplesCh, stopCh
-}
-
-func (c *ConcreteSigar) GetLoadAverage() (LoadAverage, error) {
-	l := LoadAverage{}
-	err := l.Get()
-	return l, err
-}
-
-func (c *ConcreteSigar) GetMem() (Mem, error) {
-	m := Mem{}
-	err := m.Get()
-	return m, err
-}
-
-func (c *ConcreteSigar) GetSwap() (Swap, error) {
-	s := Swap{}
-	err := s.Get()
-	return s, err
-}
-
-func (c *ConcreteSigar) GetFileSystemUsage(path string) (FileSystemUsage, error) {
-	f := FileSystemUsage{}
-	err := f.Get(path)
-	return f, err
-}