fix: allow cloudsearchdomain POST search compatibility in unit tests (#4625)

* fix: allow cloudsearchdomain POST search compatibility in unit tests

* fix: exit convertGetToPost if request is already POST

Author: kuhe

Diff for: .gitignore

@@ -1,3 +1,4 @@
+.idea
 configuration
 node_modules
 npm-debug.log

Diff for: .npmignore

@@ -9,6 +9,7 @@
 .npmignore
 .tesselinclude
 .vscode/
+.idea
 apis/*.normal.json
 appveyor.yml
 bower.json

Diff for: lib/services/cloudsearchdomain.js

@@ -99,6 +99,9 @@ AWS.util.update(AWS.CloudSearchDomain.prototype, {
    */
   convertGetToPost: function(request) {
     var httpRequest = request.httpRequest;
+    if (httpRequest.method === 'POST') {
+      return;
+    }
     // convert queries to POST to avoid length restrictions
     var path = httpRequest.path.split('?');
     httpRequest.method = 'POST';