Get EXISTING_NODES from RESOURCES.txt of not available in env

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
fix ConfigParser.NoOptionError: No option 'rhel71_build_repo' in section: 'global'

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
fix ConfigParser.InterpolationSyntaxError: '%' must be followed by '%' or '('

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
fix ERROR - ENV list is empty and RESOURCES.txt file not found

nexus was looking for RESOURCES.txt in its pwd instead of $WORKSPACE

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
fix NameError: global name 'resources_file' is not defined

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
fix "common.util - INFO - I have multiple resources" while my_nodes == 1

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
Merge pull request #43 from gsr-shanks/dev

Dev