Only use stat get_checksum: yes when needed (#7270)

By default Ansible stat module compute checksum, list extended attributes and find mime type
To find all stat invocations that really use one of those:
git grep -F stat. | grep -vE 'stat.(islnk|exists|lnk_source|writeable)'

Signed-off-by: Etienne Champetier <e.champetier@ateme.com>
(cherry picked from commit de1d9df787)

Conflicts:
	roles/etcd/tasks/check_certs.yml

roles/kubernetes/preinstall/handlers/main.yml

@@ -50,13 +50,21 @@
 
 # FIXME(mattymo): Also restart for kubeadm mode
 - name: Preinstall | kube-apiserver configured
-  stat: path="{{ kube_manifest_dir }}/kube-apiserver.manifest"
+  stat:
+    path: "{{ kube_manifest_dir }}/kube-apiserver.manifest"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kube_apiserver_set
   when: inventory_hostname in groups['kube-master'] and dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'
 
 # FIXME(mattymo): Also restart for kubeadm mode
 - name: Preinstall | kube-controller configured
-  stat: path="{{ kube_manifest_dir }}/kube-controller-manager.manifest"
+  stat:
+    path: "{{ kube_manifest_dir }}/kube-controller-manager.manifest"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kube_controller_set
   when: inventory_hostname in groups['kube-master'] and dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'
 

roles/kubernetes/preinstall/tasks/0040-set_facts.yml

@@ -9,6 +9,9 @@
 - name: check if booted with ostree
   stat:
     path: /run/ostree-booted
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: ostree
 
 - name: set is_fedora_coreos
@@ -59,6 +62,9 @@
 - name: check if kubelet is configured
   stat:
     path: "{{ kube_config_dir }}/kubelet.env"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kubelet_configured
   changed_when: false
 
@@ -84,6 +90,9 @@
 - name: check if /etc/dhclient.conf exists
   stat:
     path: /etc/dhclient.conf
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: dhclient_stat
 
 - name: target dhclient conf file for /etc/dhclient.conf
@@ -94,6 +103,9 @@
 - name: check if /etc/dhcp/dhclient.conf exists
   stat:
     path: /etc/dhcp/dhclient.conf
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: dhcp_dhclient_stat
 
 - name: target dhclient conf file for /etc/dhcp/dhclient.conf
@@ -170,6 +182,9 @@
 - name: check /usr readonly
   stat:
     path: "/usr"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: usr
 
 - name: set alternate flexvolume path

roles/kubernetes/preinstall/tasks/0050-create_directories.yml

@@ -46,6 +46,9 @@
 - name: Check if kubernetes kubeadm compat cert dir exists
   stat:
     path: "{{ kube_cert_compat_dir }}"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: kube_cert_compat_dir_check
   when:
     - inventory_hostname in groups['k8s-cluster']

roles/kubernetes/preinstall/tasks/0080-system-configurations.yml

@@ -3,6 +3,9 @@
 - name: Confirm selinux deployed
   stat:
     path: /etc/selinux/config
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   when:
     - ansible_os_family == "RedHat"
     - "'Amazon' not in ansible_distribution"
@@ -36,6 +39,9 @@
 - name: Stat sysctl file configuration
   stat:
     path: "{{ sysctl_file_path }}"
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: sysctl_file_stat
   tags:
     - bootstrap-os

roles/kubernetes/preinstall/tasks/main.yml

@@ -92,6 +92,9 @@
 - name: Check if we are running inside a Azure VM
   stat:
     path: /var/lib/waagent/
+    get_attributes: no
+    get_checksum: no
+    get_mime: no
   register: azure_check
   when:
     - not dns_late