Adds a tmsh command fallback (#33592)

* Adds a tmsh command fallback

The bigip terminal plugin assumes that the remote shell is tmsh.
This is not always true. The remote shell may be bash sometimes.

This adds a different shell command in the case that bash is the
remote shell

* Fixing upstream errors

lib/ansible/plugins/terminal/bigip.py

@@ -51,5 +51,10 @@ class TerminalModule(TerminalBase):
     def on_open_shell(self):
         try:
             self._exec_cli_command(b'modify cli preference display-threshold 0 pager disabled')
-        except AnsibleConnectionFailure:
+        except AnsibleConnectionFailure as ex:
-            raise AnsibleConnectionFailure('unable to set terminal parameters')
+            output = str(ex)
+            if 'modify: command not found' in output:
+                try:
+                    self._exec_cli_command(b'tmsh modify cli preference display-threshold 0 pager disabled')
+                except AnsibleConnectionFailure as ex:
+                    raise AnsibleConnectionFailure('unable to set terminal parameters')