added CodeBuild for git operations (#56)

release 2

* added CodeBuild for git operations
* deprecated zipdl method

authored-by: @kirankumar15

Author: kirankumar15

.gitignore

@@ -1 +1,2 @@
 .idea
+.DS_Store

ci/defaults.json

@@ -7,18 +7,6 @@
         "ParameterValue": "",
         "ParameterKey": "ApiSecret"
     },
-    {
-        "ParameterValue": "",
-        "ParameterKey": "GitToken"
-    },
-    {
-        "ParameterValue": "",
-        "ParameterKey": "OauthKey"
-    },
-    {
-        "ParameterValue": "",
-        "ParameterKey": "OauthSecret"
-    },
     {
         "ParameterValue": "",
         "ParameterKey": "OutputBucketName"