Merge pull request #858 from Iterable/evan/keychain-fix

[MOB-XXXX] makes keychain private

Author: evantk91

Diff for: iterableapi/src/main/java/com/iterable/iterableapi/IterableApi.java

@@ -50,7 +50,7 @@ public class IterableApi {
     private String inboxSessionId;
     private IterableAuthManager authManager;
     private HashMap<String, String> deviceAttributes = new HashMap<>();
-    public IterableKeychain keychain;
+    private IterableKeychain keychain;
 
     void fetchRemoteConfiguration() {
         apiClient.getRemoteConfiguration(new IterableHelper.IterableActionHandler() {