Add missing fixture file

Signed-off-by: Chris Corbyn <[email protected]>

tests/fixtures/links-figfile/fig.yml

@@ -0,0 +1,11 @@
+db:
+  image: ubuntu
+  command: /bin/sleep 300
+web:
+  image: ubuntu
+  command: /bin/sleep 300
+  links:
+    - db:db
+console:
+  image: ubuntu
+  command: /bin/sleep 300