title: suppressEmails:true not working for compositeTemplates envelope creation
body: <p>When using REST to create a standard envelope with the Docusign API, I can add a property to the "signer" recipient of "suppressEmails": "true", which works to prevent any emails from being sent from Docusign, and allows me to handle the entire signature request via an embed.</p>
  
  <p>However, I have refactored that basic envelope creation request to use the compositeTemplates workflow. I have this functional with the embed URL being generated correctly, however, the suppressEmails flag no longer works to prevent Docusign from sending the user an email notification.</p>
  
  <p>Is there something I am missing?  Here is an example of the envelope request:</p>
  
  <pre><code>{
     "compositeTemplates":[
        {
           "compositeTemplateId":"1",
           "document":{
              "documentId":"1",
              "name":"&lt;redacted&gt;",
              "fileExtension":"pdf",
              "documentBase64":"&lt;redacted&gt;",
              "signerMustAcknowledge":"accept"
           },
           "inlineTemplates":[
              {
                 "sequence":"1",
                 "recipients":{
                    "signers":[
                       {
                          "recipientId":"1",
                          "routingOrder":"1",
                          "clientUserId":"&lt;redacted&gt;",
                          "name":"&lt;redacted&gt;",
                          "email":"&lt;redacted&gt;",
                          "roleName":"signer",
                          "suppressEmails":"true"
                       }
                    ]
                 }
              }
           ],
           "serverTemplates":null
        },
        {
           "compositeTemplateId":"2",
           "inlineTemplates":[
              {
                 "sequence":"2",
                 "recipients":{
                    "signers":[
                       {
                          "recipientId":"1",
                          "routingOrder":"1",
                          "clientUserId":"&lt;redacted&gt;",
                          "name":"&lt;redacted&gt;",
                          "email":"&lt;redacted&gt;",
                          "roleName":"signer",
                          "suppressEmails":"true"
                       }
                    ]
                 }
              }
           ],
           "serverTemplates":[
              {
                 "sequence":"2",
                 "templateId":"&lt;guid&gt;"
              }
           ]
        }
     ],
     "emailSubject":"Please sign",
     "status":"sent"
  }
  </code></pre>
  
  <p>Thanks!</p>