verify-oc: Do not error out on invalid version

Detecting an invalid or unsupported version of the openshift-clients is
not an error, but the successful output of the 'verify' command. Since
we also call this command from the 'download' command, we need to ensure
that instead of exiting with an error, the command just ends and allows
the rest of 'download' to go through.

cmd/verify/oc/cmd.go

@@ -18,7 +18,6 @@ package oc
 
 import (
 	"fmt"
-	"os"
 	"os/exec"
 	"regexp"
 	"strings"
@@ -49,22 +48,22 @@ func run(_ *cobra.Command, _ []string) {
 	if err != nil {
 		reporter.Errorf("OpenShift command-line tool is not installed.\n"+
 			"Go to %s to download the OpenShift client and add it to your PATH.", ocDownloadURL)
-		os.Exit(1)
+		return
 	}
 
 	// Parse the version for the OpenShift Client
 	version := strings.Replace(strings.Split(string(output), "\n")[0], "\n", "", 1)
 	isCorrectVersion, err := regexp.Match(`\W4.\d*`, output)
 	if err != nil {
 		reporter.Errorf("Failed to parse OpenShift Client version: %v", err)
-		os.Exit(1)
+		return
 	}
 
 	if !isCorrectVersion {
 		reporter.Warnf("Current OpenShift %s", version)
 		reporter.Warnf("Your version of the OpenShift command-line tool is not supported.")
 		fmt.Printf("Go to %s to download the latest version.\n", ocDownloadURL)
-		os.Exit(1)
+		return
 	}
 
 	reporter.Infof("Current OpenShift %s", version)