fix: Relative path in KUBECONFIG envvar (#237)

Resolves #173

helmexec/runner.go

@@ -1,8 +1,6 @@
 package helmexec
 
 import (
-	"io/ioutil"
-	"os"
 	"os/exec"
 )
 
@@ -21,13 +19,6 @@ type ShellRunner struct{}
 
 // Execute a shell command
 func (shell ShellRunner) Execute(cmd string, args []string) ([]byte, error) {
-	dir, err := ioutil.TempDir("", tmpPrefix+cmd+tmpSuffix)
-	if err != nil {
-		return nil, err
-	}
-	defer os.RemoveAll(dir)
-
 	preparedCmd := exec.Command(cmd, args...)
-	preparedCmd.Dir = dir
 	return preparedCmd.CombinedOutput()
 }