Changed string check to verify that EOS device is not in config mode. (#28332)

Changed string check to verify that EOS device is not in config mode. This was required in order to work with Arista 7500 series modular switches.
Resolves #2830

lib/ansible/plugins/action/eos.py

@@ -76,7 +76,7 @@ class ActionModule(_ActionModule):
             # make sure we are in the right cli context which should be
             # enable mode and not config module
             rc, out, err = connection.exec_command('prompt()')
-            while str(out).strip().endswith(')#'):
+            while '(config' in str(out):
                 display.vvvv('wrong context, sending exit to device', self._play_context.remote_addr)
                 connection.exec_command('exit')
                 rc, out, err = connection.exec_command('prompt()')