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/github.com/containers/storage/pkg/parsers/parsers.go

@@ -0,0 +1,69 @@
+// Package parsers provides helper functions to parse and validate different type
+// of string. It can be hosts, unix addresses, tcp addresses, filters, kernel
+// operating system versions.
+package parsers
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// ParseKeyValueOpt parses and validates the specified string as a key/value pair (key=value)
+func ParseKeyValueOpt(opt string) (string, string, error) {
+	parts := strings.SplitN(opt, "=", 2)
+	if len(parts) != 2 {
+		return "", "", fmt.Errorf("Unable to parse key/value option: %s", opt)
+	}
+	return strings.TrimSpace(parts[0]), strings.TrimSpace(parts[1]), nil
+}
+
+// ParseUintList parses and validates the specified string as the value
+// found in some cgroup file (e.g. `cpuset.cpus`, `cpuset.mems`), which could be
+// one of the formats below. Note that duplicates are actually allowed in the
+// input string. It returns a `map[int]bool` with available elements from `val`
+// set to `true`.
+// Supported formats:
+//     7
+//     1-6
+//     0,3-4,7,8-10
+//     0-0,0,1-7
+//     03,1-3      <- this is gonna get parsed as [1,2,3]
+//     3,2,1
+//     0-2,3,1
+func ParseUintList(val string) (map[int]bool, error) {
+	if val == "" {
+		return map[int]bool{}, nil
+	}
+
+	availableInts := make(map[int]bool)
+	split := strings.Split(val, ",")
+	errInvalidFormat := fmt.Errorf("invalid format: %s", val)
+
+	for _, r := range split {
+		if !strings.Contains(r, "-") {
+			v, err := strconv.Atoi(r)
+			if err != nil {
+				return nil, errInvalidFormat
+			}
+			availableInts[v] = true
+		} else {
+			split := strings.SplitN(r, "-", 2)
+			min, err := strconv.Atoi(split[0])
+			if err != nil {
+				return nil, errInvalidFormat
+			}
+			max, err := strconv.Atoi(split[1])
+			if err != nil {
+				return nil, errInvalidFormat
+			}
+			if max < min {
+				return nil, errInvalidFormat
+			}
+			for i := min; i <= max; i++ {
+				availableInts[i] = true
+			}
+		}
+	}
+	return availableInts, nil
+}