MTA-3749: Attributes Update for 7.2.1

Author: Prabha Kylasamiyer Sundara Rajan

docs/topics/templates/document-attributes.adoc

@@ -24,11 +24,11 @@ ifdef::mta[]
 :WebNameTitle: User Interface
 :WebNameURL: user_interface_guide
 :WebConsoleBookName: {WebNameTitle} Guide
-:ProductVersion: 7.2.0
+:ProductVersion: 7.2.1
 :PluginName: MTA plugin
 // :MavenProductVersion: 7.0.0.GA-redhat-00001
-:ProductDistributionVersion: 7.2.0.GA-redhat
-:ProductDistribution: mta-7.2.0.GA-cli-offline.zip
+:ProductDistributionVersion: 7.2.1.GA-redhat
+:ProductDistribution: mta-7.2.1.GA-cli-offline.zip
 :DevDownloadPageURL: https://developers.redhat.com/products/mta/download
 :IDEPluginFilename: migrationtoolkit-mta-eclipse-plugin-repository
 :JiraWindupURL: https://issues.redhat.com/projects/MTA/issues
@@ -38,7 +38,8 @@ ifdef::mta[]
 :ocp-full: OpenShift Container Platform
 :ocp-short: OpenShift
 :ocp: OCP
-:ocp-version: 4.17
+:ocp-version: 4.18
+:ocp-supported: 4.18, 4.17, 4.16
 endif::[]
 
 ifdef::mtr[]