Reduces the unit test time of select bigip modules (#36256)

The modules in this patch include waits that need to happen to ensure
something is correctly configured on a BIG-IP. These waits were
raised as an issue in a recent ansible-testing meeting.

This patch eliminates the waits by mocking time.sleep

test/units/modules/network/f5/test_bigip_command.py

@@ -71,6 +71,11 @@ class TestManager(unittest.TestCase):
 
     def setUp(self):
         self.spec = ArgumentSpec()
+        self.patcher1 = patch('time.sleep')
+        self.patcher1.start()
+
+    def tearDown(self):
+        self.patcher1.stop()
 
     def test_run_single_command(self, *args):
         set_module_args(dict(