nsm: Create basic verify and periodic jobs

This change creates basic verify and periodic jobs to start setting up
the pipelines for NSM Meridio on Nordix Jenkins.

Verify jobs consist of build and static analysis jobs. These jobs get
triggered when a new PR is opened to Meridio repository and attempts to
build and tag 6 container images and run static analysis. Result is sent
to GitHub PR as checks. The jobs can be retriggered by commenting PR
with /reverify in case if they fail for some infra issue.

Periodic jobs consist of only build phase currently and they run on a nightly
basis. These jobs build, tag, and push 6 container images. Please note that
the images are tagged with latest tag and pushed to registry.nordix.org/cloud-native/meridio
but the Git repo is not tagged.

Change-Id: If9013152f20dbe1fe483c77dfceba57981a426fb