Removes f5-sdk code from bigip modules (#44595)

This patch is part of an ongoing effort to fully remove the f5sdk
from the f5 modules.

lib/ansible/modules/network/f5/bigip_device_trust.py

@@ -69,8 +69,6 @@ options:
     choices:
       - absent
       - present
-requirements:
-  - netaddr
 extends_documentation_fragment: f5
 author:
   - Tim Rupp (@caphrim007)
@@ -115,6 +113,7 @@ try:
     from library.module_utils.network.f5.common import AnsibleF5Parameters
     from library.module_utils.network.f5.common import cleanup_tokens
     from library.module_utils.network.f5.common import f5_argument_spec
+    from library.module_utils.network.f5.ipaddress import is_valid_ip
     try:
         from library.module_utils.network.f5.common import iControlUnexpectedHTTPError
     except ImportError:
@@ -126,17 +125,12 @@ except ImportError:
     from ansible.module_utils.network.f5.common import AnsibleF5Parameters
     from ansible.module_utils.network.f5.common import cleanup_tokens
     from ansible.module_utils.network.f5.common import f5_argument_spec
+    from ansible.module_utils.network.f5.ipaddress import is_valid_ip
     try:
         from ansible.module_utils.network.f5.common import iControlUnexpectedHTTPError
     except ImportError:
         HAS_F5SDK = False
 
-try:
-    import netaddr
-    HAS_NETADDR = True
-except ImportError:
-    HAS_NETADDR = False
-
 
 class Parameters(AnsibleF5Parameters):
     api_map = {
@@ -171,13 +165,11 @@ class Parameters(AnsibleF5Parameters):
     def peer_server(self):
         if self._values['peer_server'] is None:
             return None
-        try:
-            result = str(netaddr.IPAddress(self._values['peer_server']))
-            return result
-        except netaddr.core.AddrFormatError:
-            raise F5ModuleError(
-                "The provided 'peer_server' parameter is not an IP address."
-            )
+        if is_valid_ip(self._values['peer_server']):
+            return self._values['peer_server']
+        raise F5ModuleError(
+            "The provided 'peer_server' parameter is not an IP address."
+        )
 
     @property
     def peer_hostname(self):
@@ -334,8 +326,6 @@ def main():
     )
     if not HAS_F5SDK:
         module.fail_json(msg="The python f5-sdk module is required")
-    if not HAS_NETADDR:
-        module.fail_json(msg="The python netaddr module is required")
 
     try:
         client = F5Client(**module.params)