Fix the rerun functionality when using an inventory from a git repo

Changed the way the cloneInventoryRepo() function handles git repositories:
The function will now try to pull the git repo if it can be pulled, else it will be cloned.
This behaviour is based on what is done in the updateRepository() function

Renamed the file from "LobalJob_inventory.go" to "LocalJob_inventory.go"

services/tasks/LocalJob_inventory.go

@@ -1,13 +1,14 @@
 package tasks
 
 import (
-	"github.com/ansible-semaphore/semaphore/db"
-	"github.com/ansible-semaphore/semaphore/db_lib"
-	log "github.com/sirupsen/logrus"
 	"os"
 	"path"
 	"strconv"
 
+	"github.com/ansible-semaphore/semaphore/db"
+	"github.com/ansible-semaphore/semaphore/db_lib"
+	log "github.com/sirupsen/logrus"
+
 	"github.com/ansible-semaphore/semaphore/util"
 )
 
@@ -61,9 +62,20 @@ func (t *LocalJob) cloneInventoryRepo() error {
 		Client:     db_lib.CreateDefaultGitClient(),
 	}
 
-	err := repo.Clone()
+	// Try to pull the repo before trying to clone it
+	if repo.CanBePulled() {
+		err := repo.Pull()
+		if err == nil {
+			return nil
+		}
+	}
 
-	return err
+	err := os.RemoveAll(repo.GetFullPath())
+	if err != nil {
+		return err
+	}
+
+	return repo.Clone()
 }
 
 func (t *LocalJob) installStaticInventory() error {