Merge lp:~hazmat/juju-deployer/use-solo-named-config into lp:juju-deployer

[Kapil Thangavelu]

Allow usage of deployer configs without a named deployment if theres only one. Simplifies common case around juju-gui environment exports.

=== modified file 'deployer/cli.py'
--- deployer/cli.py	2013-09-11 18:08:41 +0000
+++ deployer/cli.py	2013-10-21 16:17:27 +0000
@@ -188,10 +188,15 @@
 
     # Do something to a deployment
     if not options.deployment:
-        log.error(
-            "Deployment name must be specified. available: %s", tuple(
-                sorted(config.keys())))
-        sys.exit(1)
+        # If there's only one option then use it.
+        if len(config.key()) == 1:
+            options.deployment = config.keys()[0]
+            log.info("Using deployment %s", options.deployment)
+        else:
+            log.error(
+                "Deployment name must be specified. available: %s",
+                tuple(sorted(config.keys())))
+            sys.exit(1)
 
     deployment = config.get(options.deployment)