Fix unintended SIGPIPEs. (#7214)

roles/etcd/tasks/configure.yml

 ---
 - name: Configure | Check if etcd cluster is healthy
-  shell: "set -o pipefail && {{ bin_dir }}/etcdctl endpoint --cluster status && {{ bin_dir }}/etcdctl endpoint --cluster health  2>&1 | grep -q -v 'Error: unhealthy cluster'"
+  shell: "set -o pipefail && {{ bin_dir }}/etcdctl endpoint --cluster status && {{ bin_dir }}/etcdctl endpoint --cluster health  2>&1 | grep -v 'Error: unhealthy cluster' >/dev/null"
   args:
     executable: /bin/bash
   register: etcd_cluster_is_healthy
@@ -19,7 +19,7 @@
     ETCDCTL_ENDPOINTS: "{{ etcd_access_addresses }}"
 
 - name: Configure | Check if etcd-events cluster is healthy
-  shell: "set -o pipefail && {{ bin_dir }}/etcdctl endpoint --cluster status && {{ bin_dir }}/etcdctl endpoint --cluster health  2>&1 | grep -q -v 'Error: unhealthy cluster'"
+  shell: "set -o pipefail && {{ bin_dir }}/etcdctl endpoint --cluster status && {{ bin_dir }}/etcdctl endpoint --cluster health  2>&1 | grep -v 'Error: unhealthy cluster' >/dev/null"
   args:
     executable: /bin/bash
   register: etcd_events_cluster_is_healthy

roles/etcd/tasks/join_etcd-events_member.yml

@@ -25,7 +25,7 @@
       {%- endfor -%}
 
 - name: Join Member | Ensure member is in etcd-events cluster
-  shell: "set -o pipefail && {{ bin_dir }}/etcdctl member list | grep -q {{ etcd_events_access_address }}"
+  shell: "set -o pipefail && {{ bin_dir }}/etcdctl member list | grep {{ etcd_events_access_address }} >/dev/null"
   args:
     executable: /bin/bash
   register: etcd_events_member_in_cluster

roles/etcd/tasks/join_etcd_member.yml

@@ -26,7 +26,7 @@
       {%- endfor -%}
 
 - name: Join Member | Ensure member is in etcd cluster
-  shell: "set -o pipefail && {{ bin_dir }}/etcdctl member list | grep -q {{ etcd_access_address }}"
+  shell: "set -o pipefail && {{ bin_dir }}/etcdctl member list | grep {{ etcd_access_address }} >/dev/null"
   args:
     executable: /bin/bash
   register: etcd_member_in_cluster