Test creation of multiple jobs from templates

Concatenate each job XML created from the parsed yaml when using the
YamlParser class for testing. Ensures that multiple jobs created from a
single yaml file can be tested.

Remove erroneous multiple job from scm_remote_deep_bug test.

Change-Id: I2732a7303fefff1f321a1a5b7eef9144d168e39a
Merge "Test creation of multiple jobs from templates"