Send email to PPOC when portfolio is provisioned

When a portfolio state machine transitions to the COMPLETED state, an
email is sent to the PPOC letting them know it's ready, and provides
them with their username needed to create a password.

.secrets.baseline

@@ -3,7 +3,7 @@
     "files": "^.secrets.baseline$|^.*pgsslrootcert.yml$",
     "lines": null
   },
-  "generated_at": "2020-02-10T21:40:38Z",
+  "generated_at": "2020-02-12T18:51:01Z",
   "plugins_used": [
     {
       "base64_limit": 4.5,
@@ -82,7 +82,7 @@
         "hashed_secret": "afc848c316af1a89d49826c5ae9d00ed769415f3",
         "is_secret": false,
         "is_verified": false,
-        "line_number": 43,
+        "line_number": 44,
         "type": "Secret Keyword"
       }
     ],