atomic-openshift-installer: connect_to error handling

Catch the exception that happens when connect_to isn't specified in installer.cfg.yaml

utils/src/ooinstall/cli_installer.py

@@ -8,6 +8,7 @@ import re
 import sys
 from ooinstall import openshift_ansible
 from ooinstall import OOConfig
+from ooinstall.oo_config import OOConfigInvalidHostError
 from ooinstall.oo_config import Host
 from ooinstall.variants import find_variant, get_variant_version_combos
 
@@ -447,7 +448,11 @@ def cli(ctx, unattended, configuration, ansible_playbook_directory, ansible_conf
     ctx.obj['ansible_log_path'] = ansible_log_path
     ctx.obj['verbose'] = verbose
 
-    oo_cfg = OOConfig(ctx.obj['configuration'])
+    try:
+        oo_cfg = OOConfig(ctx.obj['configuration'])
+    except OOConfigInvalidHostError as e:
+        click.echo(e)
+        sys.exit(1)
 
     # If no playbook dir on the CLI, check the config:
     if not ansible_playbook_directory: