Build and install from GOPATH

* Rename 'vendor/src' -> 'vendor'
  * Ignore vendor/ instead of vendor/src/ for lint
* Rename 'cmd/client' -> 'cmd/ocic' to make it 'go install'able
* Rename 'cmd/server' -> 'cmd/ocid' to make it 'go install'able
* Update Makefile to build and install from GOPATH
* Update tests to locate ocid/ocic in GOPATH/bin
* Search for binaries in GOPATH/bin instead of PATH
* Install tools using `go get -u`, so they are updated on each run

Signed-off-by: Jonathan Yu <jawnsy@redhat.com>

vendor/gopkg.in/cheggaaa/pb.v1/pool_x.go

@@ -0,0 +1,22 @@
+// +build linux darwin freebsd netbsd openbsd solaris dragonfly
+
+package pb
+
+import "fmt"
+
+func (p *Pool) print(first bool) bool {
+	var out string
+	if !first {
+		out = fmt.Sprintf("\033[%dA", len(p.bars))
+	}
+	isFinished := true
+	for _, bar := range p.bars {
+		if !bar.isFinish {
+			isFinished = false
+		}
+		bar.Update()
+		out += fmt.Sprintf("\r%s\n", bar.String())
+	}
+	fmt.Print(out)
+	return isFinished
+}