Staging for version increment automation (#91)

* Version increment automation

Signed-off-by: pgodithi <pgodithi@amazon.com>
(cherry picked from commit 38e663e)

build.gradle

@@ -229,4 +229,15 @@ jacocoTestReport {
 }
 
 check.dependsOn jacocoTestCoverageVerification
-jacocoTestCoverageVerification.dependsOn jacocoTestReport
+jacocoTestCoverageVerification.dependsOn jacocoTestReport
+
+// updateVersion: Task to auto increment to the next development iteration
+task updateVersion {
+    onlyIf { System.getProperty('newVersion') }
+    doLast {
+        ext.newVersion = System.getProperty('newVersion')
+        println "Setting version to ${newVersion}."
+         // String tokenization to support -SNAPSHOT
+        ant.replaceregexp(file:'build.gradle', match: '"opensearch.version", "\\d.*"', replace: '"opensearch.version", "' + newVersion.tokenize('-')[0] + '-SNAPSHOT"', flags:'g', byline:true)
+    }
+}