Add support for admin WebAPI token refresh

Author: danmooney2

Diff for: etc/config/.env.example

@@ -72,4 +72,8 @@ BROWSER_LOG_BLOCKLIST=other
 
 #*** Elastic Search version used for test ***#
 ELASTICSEARCH_VERSION=7
+
+#*** Lifetime (in seconds) of Magento Admin WebAPI Token; if token is older than this value a refresh attempt will be made just before the next WebAPI call ***#
+#MAGENTO_ADMIN_WEBAPI_TOKEN_LIFETIME=10800
+
 #*** End of .env ***#

Diff for: src/Magento/FunctionalTestingFramework/DataTransport/Auth/WebApiAuth.php

@@ -70,8 +70,9 @@ public static function getAdminToken($username = null, $password = null)
         }
 
         if (isset(self::$adminAuthTokens[$login])) {
-            $threeHours = 60 * 60 * 3;
-            $isTokenAboutToExpire = time() - self::$adminAuthTokenTimestamps[$login] > $threeHours;
+            $tokenLifetime = getenv('MAGENTO_ADMIN_WEBAPI_TOKEN_LIFETIME');
+
+            $isTokenAboutToExpire = $tokenLifetime && time() - self::$adminAuthTokenTimestamps[$login] > $tokenLifetime;
 
             if (!$isTokenAboutToExpire) {
                 return self::$adminAuthTokens[$login];