doing required changes for beta release

Author: hasinthaindrajee

modules/distribution/src/assembly/filter.properties

@@ -1,6 +1,6 @@
 product.name=WSO2 Identity Server
 product.key=IS
-product.version=5.1.0-SNAPSHOT
+product.version=5.1.0-beta
 hotdeployment=true
 hotupdate=true
 default.server.role=IdentityServer

modules/p2-profile-gen/carbon.product

@@ -2,7 +2,7 @@
 <?pde version="3.5"?>
 
 <product name="Carbon Product" uid="carbon.product.id" id="carbon.product" application="carbon.application"
-version="5.1.0.SNAPSHOT" useFeatures="true" includeLaunchers="true">
+version="5.1.0.beta" useFeatures="true" includeLaunchers="true">
 
    <configIni use="default">
    </configIni>

pom.xml

@@ -1021,7 +1021,7 @@
     <properties>
         <carbon.identity.version>5.0.2-beta</carbon.identity.version>
         <carbon.identity.jar.version>5.0.2-beta</carbon.identity.jar.version>
-        <product.identity.version>5.1.0-SNAPSHOT</product.identity.version>
+        <product.identity.version>5.1.0-beta</product.identity.version>
         <bcprov.jdk13.version>140</bcprov.jdk13.version>
         <bcprov.jdk15.version>132</bcprov.jdk15.version>
         <sevlet.api.version>2.5</sevlet.api.version>