log the configured storyboard url on failure

This change is solely for debugging purposes:
* Change log messages slightly
* Write the Storyboard URL to the log when the plugin fails to connect.

Change-Id: I714f326e57fd80b596cca89897838f113ed314e8

src/main/java/com/googlesource/gerrit/plugins/its/storyboard/StoryboardItsFacade.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/its/storyboard/StoryboardItsFacade.java b/src/main/java/com/googlesource/gerrit/plugins/its/storyboard/StoryboardItsFacade.java
index 9f52be6..28ff6c8 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/its/storyboard/StoryboardItsFacade.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/its/storyboard/StoryboardItsFacade.java
@@ -58,14 +58,14 @@
   public void addComment(final String issueId, final String comment) {
 
     if (!exists(issueId)) {
-      log.warn("Story " + issueId + " does not exist, nothing to update");
+      log.warn("Storyboard item " + issueId + " does not exist");
       return;
     }
 
     try {
       client.addComment(issueId, comment);
     } catch (IOException e) {
-      log.error("Error: could not add comment to issue " + issueId);
+      log.error("Error: unable to comment " + issueId);
     }
     log.info("Updated " + issueId + "with comment: " + comment);
   }
@@ -91,7 +91,7 @@
     try {
       info = client.getStory(issudeId);
     } catch (IOException e) {
-      log.error("Error: Storyboard is not accessible");
+      log.error("Error: Storyboard is not accessible at: " + GERRIT_CONFIG_URL);
     }
     if (info != null) {
       log.debug("Story exists, info: " + info);