Fix --enabled-only option when updating jobs

Commit 5e61fbaf00c97 added a new --enabled-only option but that
doesn't work correctly because the xml_jobs_filtered variable isn't
filled with all the jobs in the end. So some jobs are not updated even
if the disabled status was not found. That's fixed now.

Change-Id: I915116cf875e9e20c10ca43175c924b9e4307cca

jenkins_jobs/cli/subcommand/update.py

@@ -149,7 +149,7 @@ class UpdateSubCommand(base.BaseSubCommand):
                 if el is not None:
                     if el.text == "true":
                         continue
-                    xml_jobs_filtered.append(xml_job)
+                xml_jobs_filtered.append(xml_job)
 
             logging.info(
                 "Will only deploy enabled jobs "

tests/cmd/fixtures/cmd-002.yaml

@@ -1,5 +1,4 @@
 - job-template:
-    disabled: false
     name: 'bar001'
     description: 'My first job'