Add mypy and add typechecking step to script/test

Only check atst/domain/csp/cloud.py for now

.secrets.baseline

@@ -3,7 +3,7 @@
     "files": "^.secrets.baseline$|^.*pgsslrootcert.yml$",
     "lines": null
   },
-  "generated_at": "2019-10-17T14:42:56Z",
+  "generated_at": "2019-10-24T18:44:10Z",
   "plugins_used": [
     {
       "base64_limit": 4.5,
@@ -26,7 +26,7 @@
   "results": {
     "Pipfile.lock": [
       {
-        "hashed_secret": "307e5f510c60e98b8590cfd40e6dcacb0a285e42",
+        "hashed_secret": "b84ecc29e7eb4488e736295d049db2f6503ee5f8",
         "is_secret": false,
         "is_verified": false,
         "line_number": 4,
@@ -97,21 +97,30 @@
         "hashed_secret": "aa419433d95be86df254d499243bee1d5173f1ae",
         "is_secret": false,
         "is_verified": false,
-        "line_number": 7,
+        "line_number": 8,
         "type": "Secret Keyword"
       },
       {
         "hashed_secret": "afc848c316af1a89d49826c5ae9d00ed769415f3",
         "is_secret": false,
         "is_verified": false,
-        "line_number": 20,
+        "line_number": 21,
         "type": "Secret Keyword"
       },
       {
         "hashed_secret": "abcdb568713c255c81376829da20004ba9463fd3",
         "is_secret": false,
         "is_verified": false,
-        "line_number": 28,
+        "line_number": 29,
+        "type": "Secret Keyword"
+      }
+    ],
+    "deploy/minikube/secrets.yml": [
+      {
+        "hashed_secret": "97251b8a273659865b9bb4268d8ef852f10a85d8",
+        "is_secret": true,
+        "is_verified": false,
+        "line_number": 12,
         "type": "Secret Keyword"
       }
     ],
@@ -183,7 +192,7 @@
         "hashed_secret": "e4f14805dfd1e6af030359090c535e149e6b4207",
         "is_secret": false,
         "is_verified": false,
-        "line_number": 656,
+        "line_number": 657,
         "type": "Hex High Entropy String"
       }
     ]