make the methods for accessing/setting username/password package private

Author: vladak

opengrok-indexer/src/main/java/org/opengrok/indexer/history/RepositoryInfo.java

@@ -163,19 +163,19 @@ public void setHistoryEnabled(boolean flag) {
         this.historyEnabled = flag;
     }
 
-    public String getUsername() {
+    String getUsername() {
         return username;
     }
 
-    public void setUsername(String username) {
+    void setUsername(String username) {
         this.username = username;
     }
 
-    public String getPassword() {
+    String getPassword() {
         return password;
     }
 
-    public void setPassword(String password) {
+    void setPassword(String password) {
         this.password = password;
     }