changing logic of enabling initial artifact update
diff --git a/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/agent.conf b/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/agent.conf
index 6875d25..06e3a40 100644
--- a/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/agent.conf
+++ b/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/agent.conf
@@ -45,4 +45,4 @@
 metadata.service.url                  =METADATA-SERVICE-URL
 super.tenant.repository.path          =/repository/deployment/server/
 tenant.repository.path                =/repository/tenants/
-enable.initial.artifact.backup        =ENABLE_INITIAL_ARTIFACT_UPDATE
+enable.initial.artifact.backup        =ENABLE_INITIAL_ARTIFACT_BACKUP
diff --git a/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/plugins/DefaultArtifactCheckout.py b/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/plugins/DefaultArtifactCheckout.py
index f9883aa..1645030 100644
--- a/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/plugins/DefaultArtifactCheckout.py
+++ b/components/org.apache.stratos.python.cartridge.agent/src/main/python/cartridge.agent/cartridge.agent/plugins/DefaultArtifactCheckout.py
@@ -95,7 +95,7 @@
             self.log.info("Executing git clone: [tenant-id] %s [repo-url] %s, [repo path] %s",
                           git_repo.tenant_id, git_repo.repo_url, git_repo.local_repo_path)
 
-            if not Config.backup_initial_artifacts is None and Config.backup_initial_artifacts:
+            if Config.backup_initial_artifacts:
                 self.check_and_backup_initial_artifacts(git_repo.local_repo_path)
             else:
                 self.log.info("Default artifact backup disabled")