Improve integration test

Move the snapshots one directory down so that the fix is
actually required to make the tests green

Author: loewenstein-sap

test/integration/tests/1265-extensible-snapshots/files/local-snapshot.yaml renamed to test/integration/tests/1265-extensible-snapshots/files/snapshots/local-snapshot.yaml

@@ -1,3 +1,3 @@
-resolver: local-snapshot.yaml
+resolver: snapshots/local-snapshot.yaml
 packages: []
 allow-newer: true

test/integration/tests/1265-extensible-snapshots/files/package-0.1.2.3.tar.gz renamed to test/integration/tests/1265-extensible-snapshots/files/snapshots/package-0.1.2.3.tar.gz

@@ -1,3 +1,3 @@
-resolver: remote-snapshot.yaml
+resolver: snapshots/remote-snapshot.yaml
 packages: []
 allow-newer: true