Fixes ios_l2_interface and ios_vlan not working on certain interface types issue (#43819)

* Fixes #43654 and #43582

* Remove q statement

* Fix shippable errors

* Fix more shippable errors

* Fix unittest

lib/ansible/module_utils/network/ios/ios.py

@@ -145,3 +145,51 @@ def load_config(module, commands):
         return resp.get('response')
     except ConnectionError as exc:
         module.fail_json(msg=to_text(exc))
+
+
+def normalize_interface(name):
+    """Return the normalized interface name
+    """
+    if not name:
+        return
+
+    def _get_number(name):
+        digits = ''
+        for char in name:
+            if char.isdigit() or char in '/.':
+                digits += char
+        return digits
+
+    if name.lower().startswith('gi'):
+        if_type = 'GigabitEthernet'
+    elif name.lower().startswith('te'):
+        if_type = 'TenGigabitEthernet'
+    elif name.lower().startswith('fa'):
+        if_type = 'FastEthernet'
+    elif name.lower().startswith('fo'):
+        if_type = 'FortyGigabitEthernet'
+    elif name.lower().startswith('et'):
+        if_type = 'Ethernet'
+    elif name.lower().startswith('vl'):
+        if_type = 'Vlan'
+    elif name.lower().startswith('lo'):
+        if_type = 'loopback'
+    elif name.lower().startswith('po'):
+        if_type = 'port-channel'
+    elif name.lower().startswith('nv'):
+        if_type = 'nve'
+    else:
+        if_type = None
+
+    number_list = name.split(' ')
+    if len(number_list) == 2:
+        if_number = number_list[-1].strip()
+    else:
+        if_number = _get_number(name)
+
+    if if_type:
+        proper_interface = if_type + if_number
+    else:
+        proper_interface = name
+
+    return proper_interface