Append aws suffix in agent manifest (#53)

Author: anuraaga

otelagent/build.gradle.kts

@@ -70,7 +70,15 @@ tasks {
       attributes.put("Premain-Class", "software.amazon.opentelemetry.javaagent.bootstrap.AwsAgentBootstrap")
       attributes.put("Can-Redefine-Classes", "true")
       attributes.put("Can-Retransform-Classes", "true")
-      attributes.put("Implementation-Version", project.version)
+
+      val versionString = project.version.toString()
+      val implementationVersion: String
+      if (versionString.endsWith("-SNAPSHOT")) {
+        implementationVersion = "${versionString.dropLast("-SNAPSHOT".length)}-aws-SNAPSHOT"
+      } else {
+        implementationVersion = "$versionString-aws"
+      }
+      attributes.put("Implementation-Version", implementationVersion)
     }
   }
 }