Update Checkstyle for lambdas

Author: garydgregory

src/conf/checkstyle.xml

@@ -77,10 +77,7 @@
     <module name="ParenPad" />
 
     <module name="WhitespaceAfter" />
-    <module name="WhitespaceAround">
-      <property name="tokens"
-        value="ASSIGN, BAND, BAND_ASSIGN, BOR, BOR_ASSIGN, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN, COLON, DIV, DIV_ASSIGN, EQUAL, GE, GT, LAND, LCURLY, LE, LITERAL_ASSERT, LITERAL_CATCH, LITERAL_DO, LITERAL_ELSE, LITERAL_FINALLY, LITERAL_FOR, LITERAL_IF, LITERAL_RETURN, LITERAL_SYNCHRONIZED, LITERAL_TRY, LITERAL_WHILE, LOR, LT, MINUS, MINUS_ASSIGN, MOD, MOD_ASSIGN, NOT_EQUAL, PLUS, PLUS_ASSIGN, QUESTION, RCURLY, SL, SLIST, SL_ASSIGN, SR, SR_ASSIGN, STAR, STAR_ASSIGN, TYPE_EXTENSION_AND" />
-    </module>
+    <module name="WhitespaceAround" />
 
     <!-- Modifier Checks -->
     <!-- See http://checkstyle.sf.net/config_modifiers.html -->