jobs-builder: strip newlines in the output of os2node.yaml.inc

It is added a minus sign (-) in the control flow statements of os2node.yaml.inc
so that newlines are striped off. Otherwise the output will contain
newline characters which can end up messing with the generated XML
representation of the jobs.

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>

jobs-builder/jobs/include/os2node.yaml.inc

@@ -4,14 +4,14 @@
 #
 # Convert OS name to node label string.
 #}
-{% if os == "centos8" -%}
+{%- if os == "centos8" -%}
 centos8_azure
-{% elif os == "fedora32" -%}
+{%- elif os == "fedora32" -%}
 fedora32_azure
-{% elif os == "ubuntu1804" -%}
+{%- elif os == "ubuntu1804" -%}
 ubuntu1804_azure || ubuntu1804-azure
-{% elif os == "ubuntu-20.04" -%}
+{%- elif os == "ubuntu-20.04" -%}
 ubuntu_20.04
-{% elif os == "ubuntu-20.04-ARM" -%}
+{%- elif os == "ubuntu-20.04-ARM" -%}
 arm_node || arm-ubuntu-2004
-{% endif %}
+{%- endif %}