Added exception handling to database creation and deletion. Fixes #8075.

database/mysql_db

@@ -319,7 +319,10 @@ def main():
     changed = False
     if db_exists(cursor, db):
         if state == "absent":
+            try:
                 changed = db_delete(cursor, db)
+            except Exception, e:
+                module.fail_json(msg="error deleting database: " + str(e))
         elif state == "dump":
             rc, stdout, stderr = db_dump(module, login_host, login_user, 
                                         login_password, db, target, 
@@ -340,7 +343,10 @@ def main():
                 module.exit_json(changed=True, db=db, msg=stdout)
     else:
         if state == "present":
+            try:
                 changed = db_create(cursor, db, encoding, collation)
+            except Exception, e:
+                module.fail_json(msg="error creating database: " + str(e))
 
     module.exit_json(changed=changed, db=db)