Make etcd data dir configurable.

Closes: #1073
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

roles/adduser/defaults/main.yml

@@ -1,12 +1,13 @@
 ---
 kube_cert_group: kube-cert
+etcd_data_dir: "/var/lib/etcd"
 
 addusers:
   etcd:
     name: etcd
     comment: "Etcd user"
     createhome: yes
-    home: "/var/lib/etcd"
+    home: "{{ etcd_data_dir }}"
     system: yes
     shell: /bin/nologin
   kube:

roles/adduser/vars/debian.yml

@@ -3,7 +3,7 @@ addusers:
   - name: etcd
     comment: "Etcd user"
     createhome: yes
-    home: "/var/lib/etcd"
+    home: "{{ etcd_data_dir }}"
     system: yes
     shell: /bin/nologin
 

roles/adduser/vars/redhat.yml

@@ -3,7 +3,7 @@ addusers:
   - name: etcd
     comment: "Etcd user"
     createhome: yes
-    home: "/var/lib/etcd"
+    home: "{{ etcd_data_dir }}"
     system: yes
     shell: /bin/nologin