Cleanup Centos roles README and galaxy metadata

Signed-off-by: Florent CARLI <florent.carli@rte-france.com>

roles/centos/README.md

@@ -0,0 +1,26 @@
+# Centos Role
+
+This role apply the basic SEAPATH prerequisites for any centos machine
+
+## Requirements
+
+no requirement.
+
+## Role Variables
+
+- syslog_tls_ca
+- syslog_tls_key
+- syslog_tls_server_ca
+- admin_user
+- admin_passwd
+- admin_ssh_keys
+- grub_append
+- syslog_server_ip
+
+## Example Playbook
+
+```yaml
+- hosts: cluster_machines
+  roles:
+    - { role: seapath_ansible.centos }
+```

roles/centos/meta/main.yml

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+---
+galaxy_info:
+  author: "RTE"
+  description: Prerequisite for all centos machine
+  min_ansible_version: 2.9.10
+  license: Apache-2.0
+  platforms:
+  - name: Centos
+    versions:
+    - all
+dependencies: []
+

roles/centos_hypervisor/README.md

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+# CentOS Hypervisor Role
+
+This role applies the hypervisor specific configurations (virtualisation, realtime...) for Centos machines
+
+## Requirements
+
+no requirement.
+
+## Role Variables
+
+- isolcpus
+- vhost_vsock
+- sriov_driver
+- sriov
+- cpusystem
+- cpuuser
+- cpumachines
+- cpumachinesrt
+- cpumachinesnort
+- cpuovs
+- custom_tuned_profile_path
+
+## Example Playbook
+
+```yaml
+- hosts: cluster_machines
+  roles:
+    - { role: seapath_ansible.centos_hypervisor }
+```

roles/centos_hypervisor/meta/main.yml

@@ -0,0 +1,12 @@
+---
+galaxy_info:
+  author: "RTE"
+  description: applies the hypervisor specific configurations (virtualisation, realtime...) for Centos machines
+  license: Apache-2.0
+  min_ansible_version: 2.9.10
+  platforms:
+  - name: CentOS
+    versions:
+    - all
+dependencies: []
+

roles/centos_physical_machine/README.md

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+# CentOS Physical Machine Role
+
+This role applies the SEAPATH prerequisites for any Debian physical machine (hypervisor, observer, or standalone)
+
+## Requirements
+
+no requirement.
+
+## Role Variables
+
+- extra_sysctl_physical_machines
+- extra_kernel_modules
+- admin_user
+- logstash_server_ip
+- pacemaker_shutdown_timeout
+- chrony_wait_timeout_sec
+
+## Example Playbook
+
+```yaml
+- hosts: cluster_machines
+  roles:
+    - { role: seapath_ansible.centos_physical_machine }
+```

roles/centos_physical_machine/meta/main.yml

@@ -0,0 +1,12 @@
+---
+galaxy_info:
+  author: "RTE"
+  description: applies the SEAPATH prerequisites for any Debian physical machine (hypervisor, observer, or standalone)
+  license: Apache-2.0
+  min_ansible_version: 2.9.10
+  platforms:
+  - name: CentOS
+    versions:
+    - all
+dependencies: []
+

roles/debian_hypervisor/README.md

@@ -1,6 +1,6 @@
 # Debian Hypervisor Role
 
-This role apply the hypervisor specific configurations (virtualisation, realtime...)
+This role apply the hypervisor specific configurations (virtualisation, realtime...) for Debian machines
 
 ## Requirements