Update commons-io to the same version in all modules (#13531)

Adds a commons-io.version property to the build.properties file

Change-Id: I57a72f8841846d77ba73d567bd9bc3c8415b243c

build.properties

@@ -6,3 +6,4 @@ vaadin.url=http://vaadin.com
 vaadin.java.version=1.6
 vaadin.version=0.0.0.unversioned-development-build
 vaadin.sass.version=0.9.0
+commons-io.version=2.4

buildhelpers/ivy.xml

@@ -28,7 +28,8 @@
 
     </publications>
     <dependencies>
-        <dependency org="commons-io" name="commons-io" rev="2.2" />
+        <!-- client-compiler, server and uitest also use commons-io -->
+        <dependency org="commons-io" name="commons-io" rev="${commons-io.version}" />
         <dependency org="commons-cli" name="commons-cli" rev="1.2" />
         <dependency org="com.vaadin" name="vaadin-sass-compiler"
                     rev="${vaadin.sass.version}" />

client-compiler/ivy.xml

@@ -53,7 +53,7 @@
             rev="1.1" conf="build,ide -> default" />
         <dependency org="commons-codec" name="commons-codec"
             rev="1.8" conf="build,ide -> default" />
-        <dependency org="commons-io" name="commons-io" rev="2.4"
+        <dependency org="commons-io" name="commons-io" rev="${commons-io.version}"
             conf="build,ide -> default" />
         <dependency org="org.apache.commons" name="commons-lang3"
             rev="3.1" conf="build,ide -> default" />

server/ivy.xml

@@ -74,7 +74,7 @@
             conf="test,ide-> default" transitive="true" />
         <dependency org="org.hsqldb" name="hsqldb" rev="2.2.6"
             conf="test,ide -> default" />
-        <dependency org="commons-io" name="commons-io" rev="2.2"
+        <dependency org="commons-io" name="commons-io" rev="${commons-io.version}"
             conf="test->default" />
         <dependency org="commons-lang" name="commons-lang"
             rev="2.6" conf="test,ide->default" />

uitest/ivy.xml

@@ -85,7 +85,7 @@
             conf="ide, build->default" />
         <dependency org="commons-codec" name="commons-codec"
             rev="1.5" conf="build,ide->default" />
-        <dependency org="commons-io" name="commons-io" rev="2.2"
+        <dependency org="commons-io" name="commons-io" rev="${commons-io.version}"
             conf="build,ide->default" />
         <!-- Mainly for SQLContainer tests -->
         <dependency org="org.hsqldb" name="hsqldb" rev="2.2.6"