Update Orbit repository to R20180606145124 for Photon and Maven to 3.5.3

Change-Id: I55f56971f38f2e13fa886388e47786713df51f2a
Signed-off-by: Aparna Argade <aprsac@yahoo.com>
diff --git a/devtools/target-platforms/photon/photon.target b/devtools/target-platforms/photon/photon.target
index 32f7309..2478066 100644
--- a/devtools/target-platforms/photon/photon.target
+++ b/devtools/target-platforms/photon/photon.target
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<?pde version="3.8"?><target name="Eclipse Photon via p2" sequenceNumber="2">
+<?pde version="3.8"?><target name="Eclipse Photon via p2" sequenceNumber="3">
 <locations>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
 <unit id="org.eclipse.platform.ide" version="0.0.0"/>
@@ -21,7 +21,7 @@
 <unit id="org.hamcrest.core" version="1.3.0.v20180420-1519"/>
 <unit id="org.hamcrest.core.source" version="1.3.0.v20180420-1519"/>
 <unit id="ca.odell.glazedlists" version="0.0.0"/>
-<repository location="http://download.eclipse.org/tools/orbit/downloads/drops/R20180531190352/repository/"/>
+<repository location="http://download.eclipse.org/tools/orbit/downloads/drops/R20180606145124/repository/"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
 <unit id="org.eclipse.license.feature.group" version="1.0.1.v20140414-1359"/>
diff --git a/pom.xml b/pom.xml
index 1469015..653d544 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
 	<packaging>pom</packaging>
 
 	<prerequisites>
-		<maven>3.1.1</maven>
+		<maven>3.5.3</maven>
 	</prerequisites>
 	<properties>
 		<tycho-version>1.2.0</tycho-version>