Name the unnamed tasks in Ansible playbooks

Ansible-linter requires all the tasks in the playbook to be named.

Reference to the linter rule:

[ANSIBLE0011] All tasks should be named

roles/explorer/tasks/main.yml

@@ -26,7 +26,8 @@
   with_items:
    - node.toml
 
-- git:
+- name: Clone poanetworks/chain-explorer repo from GitHub
+  git:
     repo: "https://github.com/{{ MAIN_REPO_FETCH }}/chain-explorer"
     dest: "{{ home }}/chain-explorer"
     version: "acee07c"
@@ -36,7 +37,8 @@
   notify:
     - restart poa-chain-explorer
 
-- file: path={{ home }}/chain-explorer owner={{ username }} group={{ username }} recurse=yes
+- name: Set group and owner on the chain-explorer directory
+  file: path={{ home }}/chain-explorer owner={{ username }} group={{ username }} recurse=yes
 
 - name: install npm chain_explorer
   npm:

roles/moc/tasks/main.yml

@@ -34,9 +34,14 @@
     content: "{{ MOC_KEYFILE }}"
     dest: "{{ home }}/parity_data/keys/{{ GENESIS_NETWORK_NAME }}/{{ username }}.key"
 
-- git: repo=https://github.com/{{ MAIN_REPO_FETCH }}/poa-scripts-moc dest={{ home }}/poa-scripts-moc version={{ SCRIPTS_MOC_BRANCH }}
+- name: Clone poanetworks/poa-scripts-moc repo from GitHub
+  git:
+    repo: "https://github.com/{{ MAIN_REPO_FETCH }}/poa-scripts-moc"
+    dest: "{{ home }}/poa-scripts-moc"
+    version: "{{ SCRIPTS_MOC_BRANCH }}"
 
-- file: path={{ home }}/poa-scripts-moc owner={{ username }} group={{ username }} recurse=yes
+- name: Change owner and group of poa-scripts-moc file
+  file: path={{ home }}/poa-scripts-moc owner={{ username }} group={{ username }} recurse=yes
 
 - name: install npm initial_keys_script
   npm:

roles/netstat/tasks/main.yml

@@ -13,7 +13,8 @@
     dest: "{{ home }}/eth-netstats"
     version: "cb431d6"
 
-- file: path={{ home }}/eth-netstats owner={{ username }} group={{ username }} recurse=yes
+- name: Set owner and group on eth-netstats files 
+  file: path={{ home }}/eth-netstats owner={{ username }} group={{ username }} recurse=yes
 
 - name: install npm netstats
   npm:

roles/nginx/tasks/main.yml

@@ -3,7 +3,8 @@
   apt: name=nginx state=present
   tags: nginx
 
-- file: path=/etc/nginx/ssl state=directory mode=0755
+- name: Create directory for nginx SSL certificates
+  file: path=/etc/nginx/ssl state=directory mode=0755
   tags: nginx
 
 - name: Check certificate file

roles/poa-netstats/tasks/main.yml

@@ -26,7 +26,8 @@
   notify:
     - restart poa-netstats
 
-- file: path={{ home }}/eth-net-intelligence-api owner={{ username }} group={{ username }} recurse=yes
+- name: Change owner and group of eth-net-intelligence-api files
+  file: path={{ home }}/eth-net-intelligence-api owner={{ username }} group={{ username }} recurse=yes
 
 - name: install npm netstats
   npm:

roles/preconf/tasks/vars.yml

@@ -1,7 +1,15 @@
 ---
-- sysctl: name=vm.swappiness value=10 state=present
-- sysctl: name=vm.vfs_cache_pressure value=50 state=present
-- sysctl: name=net.core.somaxconn value=1000 state=present
+- name: Set vm.swappiness system parameter
+  sysctl: name=vm.swappiness value=10 state=present
 
-- lineinfile: dest=/etc/security/limits.conf line="* soft nofile 100000" state=present
-- lineinfile: dest=/etc/security/limits.conf line="* hard nofile 100000" state=present
+- name: Set vm.vfs_cache_pressure system parameter
+  sysctl: name=vm.vfs_cache_pressure value=50 state=present
+
+- name: Set net.core.somaxconn system parameter
+  sysctl: name=net.core.somaxconn value=1000 state=present
+
+- name: Set nofile soft limit
+  lineinfile: dest=/etc/security/limits.conf line="* soft nofile 100000" state=present
+
+- name: Set nofile hard limit
+  lineinfile: dest=/etc/security/limits.conf line="* hard nofile 100000" state=present

roles/usermanager/tasks/main.yml

@@ -1,5 +1,6 @@
 ---
-- user: name={{ item.name }} groups={{ item.addgroups | default('') }} shell=/bin/bash append=yes
+- name: Create users
+  user: name={{ item.name }} groups={{ item.addgroups | default('') }} shell=/bin/bash append=yes
   with_items: "{{ users }}"
 
 - include_tasks: nested_authorized_key.yml

roles/validator/tasks/main.yml

@@ -34,11 +34,22 @@
     content: "{{ MINING_KEYFILE }}"
     dest: "{{ home }}/parity_data/keys/{{ GENESIS_NETWORK_NAME }}/validator.key.{{ MINING_ADDRESS }}"
 
-- git: repo=https://github.com/{{ MAIN_REPO_FETCH }}/poa-scripts-validator dest={{ home }}/poa-scripts-validator version={{ SCRIPTS_VALIDATOR_BRANCH }}
+- name: Clone poanetworks/poa-scripts-validator repo from GitHub
+  git:
+    repo: "https://github.com/{{ MAIN_REPO_FETCH }}/poa-scripts-validator"
+    dest: "{{ home }}/poa-scripts-validator"
+    version: "{{ SCRIPTS_VALIDATOR_BRANCH }}"
 
-- file: src="{{ home }}/node.toml" dest="{{ home }}/poa-scripts-validator/node.toml" owner="{{ username }}" group="{{ username }}" state=link
+- name: Link node.toml file
+  file:
+    src: "{{ home }}/node.toml"
+    dest: "{{ home }}/poa-scripts-validator/node.toml"
+    owner: "{{ username }}"
+    group: "{{ username }}"
+    state: link
 
-- file: path={{ home }}/poa-scripts-validator owner={{ username }} group={{ username }} recurse=yes
+- name: Set up owner and group on poa-scripts-validator files
+  file: path={{ home }}/poa-scripts-validator owner={{ username }} group={{ username }} recurse=yes
 
 - name: install npm transferRewardToPayoutKey
   npm: