hashicorp version pkg uses alpha sort on -rc11 metadata - so switching to Josh's catalog pkg

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

vendor/github.com/rancher/catalog-service/utils/version/version.go

@@ -0,0 +1,84 @@
+package version
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	numberRe = regexp.MustCompile("[0-9]+")
+	wordRe   = regexp.MustCompile("[a-z]+")
+)
+
+func GreaterThan(a, b string) bool {
+	a = stripMetadata(a)
+	b = stripMetadata(b)
+
+	a = strings.TrimLeft(a, "v")
+	b = strings.TrimLeft(b, "v")
+
+	aSplit := periodDashSplit(a)
+	bSplit := periodDashSplit(b)
+
+	if len(bSplit) > len(aSplit) {
+		return !GreaterThan(b, a) && a != b
+	}
+
+	for i := 0; i < len(aSplit); i++ {
+		if i == len(bSplit) {
+			if _, err := strconv.Atoi(aSplit[i]); err == nil {
+				return true
+			}
+			return false
+		}
+		aWord := wordRe.FindString(aSplit[i])
+		bWord := wordRe.FindString(bSplit[i])
+		if aWord != "" && bWord != "" {
+			if strings.Compare(aWord, bWord) > 0 {
+				return true
+			}
+			if strings.Compare(bWord, aWord) > 0 {
+				return false
+			}
+		}
+		aMatch := numberRe.FindString(aSplit[i])
+		bMatch := numberRe.FindString(bSplit[i])
+		if aMatch == "" || bMatch == "" {
+			if strings.Compare(aSplit[i], bSplit[i]) > 0 {
+				return true
+			}
+			if strings.Compare(bSplit[i], aSplit[i]) > 0 {
+				return false
+			}
+		}
+		aNum, _ := strconv.Atoi(aMatch)
+		bNum, _ := strconv.Atoi(bMatch)
+		if aNum > bNum {
+			return true
+		}
+		if bNum > aNum {
+			return false
+		}
+	}
+
+	return false
+}
+
+func stripMetadata(v string) string {
+	split := strings.Split(v, "+")
+	if len(split) > 1 {
+		return split[0]
+	}
+	return v
+}
+
+func periodDashSplit(s string) []string {
+	return strings.FieldsFunc(s, func(r rune) bool {
+		switch r {
+		case '.', '-':
+			return true
+		}
+		return false
+	})
+}