security updates and yaml

setting proper schema for yaml and was notified of security updates: libssl1.0.0: 3611-1, 3628-1

Author: kz6fittycent

snap/snapcraft.yaml

@@ -1,5 +1,5 @@
 name: slcli # check to see if it's available
-version: '5.4.4.0+git' # check versioning
+version: '5.4.4.1+git' # check versioning
 summary: Python based SoftLayer API Tool. # 79 char long summary
 description: |
     A command-line interface is also included and can be used to manage various SoftLayer products and services.
@@ -20,7 +20,8 @@ parts:
   my-part:
     source: https://github.com/softlayer/softlayer-python
     source-type: git
-    plugin: python3
+    plugin: python
+    python-version: python3
 
     build-packages:
       - python3