add php 7.1 for cent8

Author: usmannasir

managePHP/phpManager.py

@@ -15,7 +15,7 @@ def findPHPVersions():
         if distro == ProcessUtilities.centos:
             return ['PHP 5.3', 'PHP 5.4', 'PHP 5.5', 'PHP 5.6', 'PHP 7.0', 'PHP 7.1', 'PHP 7.2', 'PHP 7.3', 'PHP 7.4']
         elif distro == ProcessUtilities.cent8:
-            return ['PHP 7.2', 'PHP 7.3', 'PHP 7.4']
+            return ['PHP 7.1','PHP 7.2', 'PHP 7.3', 'PHP 7.4']
         elif distro == ProcessUtilities.ubuntu20:
             return ['PHP 7.2', 'PHP 7.3', 'PHP 7.4']
         else: