[WIP] - 422 elb rotate (#493)

* Initial work on certificate rotation.

* Adding ability to get additional certificate info.

* - Adding endpoint rotation.
- Removes the g requirement from all services to enable easier testing.

lemur/plugins/lemur_digicert/plugin.py

@@ -92,7 +92,7 @@ def process_options(options, csr):
         "certificate":
             {
                 "common_name": options['common_name'],
-                "csr": csr.decode('utf-8'),
+                "csr": csr,
                 "signature_hash":
                     signature_hash(options.get('signing_algorithm')),
             },

lemur/plugins/lemur_digicert/tests/test_digicert.py

@@ -27,7 +27,7 @@ def test_process_options(app):
 
     assert data == {
         'certificate': {
-            'csr': CSR_STR.decode('utf-8'),
+            'csr': CSR_STR,
             'common_name': 'example.com',
             'dns_names': names,
             'signature_hash': 'sha256'