Add netaddr to pipenv configuration

Required by the ansible-relayor role.

Pipfile

@@ -9,6 +9,7 @@ PyYAML = "*"
 paramiko = "*"
 cryptography = "*"
 ansible = "==2.5.2"
+netaddr = "*"
 
 [dev-packages]
 

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "ffbb8f07429243fbd2a2c1a3c3d2fa38fb8ede07fec46d93dee1d5b91e06f9a5"
+            "sha256": "114df79ccfeb37984c5d353c79c4c0f1c1da24496bf4e8044f5b314ad1b7782f"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -140,6 +140,14 @@
             ],
             "version": "==1.0"
         },
+        "netaddr": {
+            "hashes": [
+                "sha256:38aeec7cdd035081d3a4c306394b19d677623bf76fa0913f6695127c7753aefd",
+                "sha256:56b3558bd71f3f6999e4c52e349f38660e54a7a8a9943335f73dfc96883e08ca"
+            ],
+            "index": "pypi",
+            "version": "==0.7.19"
+        },
         "paramiko": {
             "hashes": [
                 "sha256:24fb31c947de85fbdeca09e222d41206781581fb0bdf118d2ef18f6e414cd388",