Move preflight chart to sub-charts directory

Signed-off-by: Richard Wall <[email protected]>

Author: wallrj

chart/jetstacksecure-mp/Chart.yaml

@@ -12,4 +12,4 @@ dependencies:
     repository: ./charts/google-cas-issuer
   - name: preflight
     appVersion: 0.1.27
-    repository: ../preflight
+    repository: ./charts/preflight