ci: jenkins-jobs builder requires git:name set

In case there is no 'origin', jenkins-jobs fails with an error like:

    jenkins_jobs.errors.JenkinsJobsException: Must specify a url for git remote "origin"

Signed-off-by: Niels de Vos <ndevos@redhat.com>

jobs/ci-job-validation.yaml

@@ -13,6 +13,7 @@
     pipeline-scm:
       scm:
         - git:
+            name: origin
             url: https://github.com/ceph/ceph-csi
             branches:
               - ci/centos

jobs/containerized-tests.yaml

@@ -13,6 +13,7 @@
     pipeline-scm:
       scm:
         - git:
+            name: origin
             url: https://github.com/ceph/ceph-csi
             branches:
               - ci/centos

jobs/jjb-deploy.yaml

@@ -16,6 +16,7 @@
       }
     scm:
       git:
+        name: origin
         url: https://github.com/ceph/ceph-csi
         branches:
           - ci/centos