Make all install actions consistently use with_items

This is primarily a style fix, not a functional one.

Related-Bug: #1495748
Change-Id: Ia34e01bced2d0287dab5353f975f36f9323cd205

tasks/swift_install.yml

@@ -46,8 +46,7 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items:
-    - "{{ swift_requires_pip_packages }}"
+  with_items: swift_requires_pip_packages
   tags:
     - swift-install
     - swift-pip-packages
@@ -115,8 +114,7 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items:
-    - "{{ swift_pip_packages }}"
+  with_items: swift_pip_packages
   when:
     - swift_venv_enabled | bool
     - swift_get_venv | failed
@@ -133,9 +131,8 @@
   until: install_packages|success
   retries: 5
   delay: 2
-  with_items:
-    - "{{ swift_pip_packages }}"
+  with_items: swift_pip_packages
   when: not swift_venv_enabled | bool
   tags:
     - swift-install
-    - swift-pip-packages
+    - swift-pip-packages