github: update of .jira_sync_config.yaml (#557)

I changed the 'components' element in .jira_sync_config.yaml
configuration file for the synchronization with Jira. to allow filtering
by 'MicroCloud' key

.github/.jira_sync_config.yaml

@@ -9,9 +9,8 @@ settings:
 
   # (Optional) Jira project components that should be attached to the created issue
   # Component names are case-sensitive
-  # components:
-  #  - LXD
-  #  - MicroCloud
+  components:
+    - MicroCloud
 
   # (Optional) GitHub labels. Only issues with one of those labels will be synchronized.
   # If not specified, all issues will be synchronized
@@ -36,4 +35,4 @@ settings:
     improvement: Story
     feature: Story
     investigation: Spike
-    bug: Bug
+    bug: Bug