Cirrus: Run int. tests in parallel with unit

This is somewhat of a band-aid since these two tasks take 45+ minutes
each.  Running them in parallel improves the overall runtime when
tests are otherwise/generally passing.  If/when unit tests fail, the
status won't update until integration tasks complete, but the failure
will be immediately observable in a PR.  So it's a minor price to pay
for improved runtime in the general case.

Signed-off-by: Chris Evich <cevich@redhat.com>

.cirrus.yml

@@ -202,7 +202,8 @@ integration_task:
     alias: integration
     only_if: *not_docs
     depends_on:
-      - unit
+      - smoke
+      - vendor
 
     matrix:
         # VFS
@@ -259,7 +260,8 @@ in_podman_task:
     alias: in_podman
     only_if: *not_docs
     depends_on:
-        - unit
+      - smoke
+      - vendor
 
     env:
         # This is key, cause the scripts to re-execute themselves inside a container.