Use full path in config validation consistently

roles/sshd/tasks/algorithms.yml

@@ -15,7 +15,7 @@
     path: /etc/ssh/sshd_config
     regexp: '^HostKey /etc/ssh/ssh_host_ed25519_key'
     line: 'HostKey /etc/ssh/ssh_host_ed25519_key'
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s
 
 - name: "Algorithms | enable the RSA authentication algorithm"
   notify: "Restart ssh"
@@ -23,7 +23,7 @@
     path: /etc/ssh/sshd_config
     regexp: '^HostKey /etc/ssh/ssh_host_rsa_key'
     line: 'HostKey /etc/ssh/ssh_host_rsa_key'
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s
 
 - name: "Algorithms | disable the ECDSA algorithm (deemed to be less safe)"
   notify: "Restart ssh"
@@ -31,7 +31,7 @@
     path: /etc/ssh/sshd_config
     regexp: '^HostKey /etc/ssh/ssh_host_ecdsa_key'
     state: absent
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s
 
 - name: "Algorithms | disable the DSA algorithm (considered to be defunct)"
   notify: "Restart ssh"
@@ -39,4 +39,4 @@
     path: /etc/ssh/sshd_config
     regexp: '^HostKey /etc/ssh/ssh_host_dsa_key'
     state: absent
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s

roles/sshd/tasks/main.yml

@@ -23,4 +23,4 @@
     path: /etc/ssh/sshd_config
     regexp: '^#?LogLevel'
     line: 'LogLevel VERBOSE'
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s

roles/sshd/tasks/restrictions.yml

@@ -36,7 +36,7 @@
     path: /etc/ssh/sshd_config
     regexp: '^#?UsePAM'
     line: "UsePAM {{ sshd_disable_pam | ternary('no', 'yes') }}"
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s
 
 - name: "Restrictions | ensure the SSHD config is restricted to the root user"
   notify: "Restart ssh"

roles/sshd/tasks/whitelists.yml

@@ -6,7 +6,7 @@
     path: /etc/ssh/sshd_config
     regexp: '^#?\s*AllowUsers\s+'
     line: "AllowUsers {{ sshd_allow_users }}"
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s
 
 - name: "Configure AllowGroups"
   when: sshd_allow_groups is defined
@@ -15,4 +15,4 @@
     path: /etc/ssh/sshd_config
     regexp: '^#?\s*AllowGroups\s+'
     line: "AllowGroups {{ sshd_allow_groups }}"
-    validate: sshd -f %s -t
+    validate: /usr/sbin/sshd -t -f %s