Modify roles README for consistency.

Modify examples in server and replica roles for consistency with client
role, by defining language for code blocks.

roles/ipareplica/README.md

@@ -47,15 +47,19 @@ Usage
 
 Example inventory file with fixed principal using auto-discovery with DNS records:
 
+```ini
 [ipareplicas]
 ipareplica1.example.com
 ipareplica2.example.com
 
 [ipareplicas:vars]
 ipaadmin_principal=admin
+```
 
 Example playbook to setup the IPA client(s) using principal from inventory file and password from an [Ansible Vault](http://docs.ansible.com/ansible/latest/playbooks_vault.html) file:
 
+```yaml
+---
 - name: Playbook to configure IPA replicas
   hosts: ipareplicas
   become: true
@@ -65,9 +69,12 @@ Example playbook to setup the IPA client(s) using principal from inventory file
   roles:
   - role: ipareplica
     state: present
+```
 
 Example playbook to unconfigure the IPA client(s) using principal and password from inventory file:
 
+```yaml
+---
 - name: Playbook to unconfigure IPA replicas
   hosts: ipareplicas
   become: true
@@ -75,9 +82,11 @@ Example playbook to unconfigure the IPA client(s) using principal and password f
   roles:
   - role: ipareplica
     state: absent
+```
 
 Example inventory file with fixed server, principal, password and domain:
 
+```ini
 [ipaserver]
 ipaserver.example.com
 
@@ -90,9 +99,12 @@ Example inventory file with fixed server, principal, password and domain:
 ipaadmin_principal=admin
 ipaadmin_password=MySecretPassword123
 ipadm_password=MySecretPassword456
+```
 
 Example playbook to setup the IPA client(s) using principal and password from inventory file:
 
+```yaml
+---
 - name: Playbook to configure IPA replicas with username/password
   hosts: ipareplicas
   become: true
@@ -100,7 +112,7 @@ Example playbook to setup the IPA client(s) using principal and password from in
   roles:
   - role: ipareplica
     state: present
-
+```
 
 Playbooks
 =========

roles/ipaserver/README.md

@@ -42,8 +42,7 @@ Requirements
 Limitations
 -----------
 
-External signed CA
-
+**External signed CA**
 External signed CA is now supported. But the currently needed two step process is an issue for the processing in a simple playbook.
 
 Work is planned to have a new method to handle CSR for external signed CAs in a separate step before starting the server installation.
@@ -54,6 +53,7 @@ Usage
 
 Example inventory file with fixed domain and realm, setting up of the DNS server and using forwarders from /etc/resolv.conf:
 
+```ini
 [ipaserver]
 ipaserver2.example.com
 
@@ -62,9 +62,12 @@ Example inventory file with fixed domain and realm, setting up of the DNS server
 ipaserver_realm=EXAMPLE.COM
 ipaserver_setup_dns=yes
 ipaserver_auto_forwarders=yes
+```
 
 Example playbook to setup the IPA server using admin and dirman passwords from an [Ansible Vault](http://docs.ansible.com/ansible/latest/playbooks_vault.html) file:
 
+```yaml
+---
 - name: Playbook to configure IPA server
   hosts: ipaserver
   become: true
@@ -74,9 +77,12 @@ Example playbook to setup the IPA server using admin and dirman passwords from a
   roles:
   - role: ipaserver
     state: present
+```
 
 Example playbook to unconfigure the IPA client(s) using principal and password from inventory file:
 
+```yaml
+---
 - name: Playbook to unconfigure IPA server
   hosts: ipaserver
   become: true
@@ -84,9 +90,11 @@ Example playbook to unconfigure the IPA client(s) using principal and password f
   roles:
   - role: ipaserver
     state: absent
+```
 
 Example inventory file with fixed domain, realm, admin and dirman passwords:
 
+```ini
 [ipaserver]
 ipaserver.example.com
 
@@ -95,9 +103,12 @@ Example inventory file with fixed domain, realm, admin and dirman passwords:
 ipaserver_realm=EXAMPLE.COM
 ipaadmin_password=MySecretPassword123
 ipadm_password=MySecretPassword234
+```
 
 Example playbook to setup the IPA server using admin and dirman passwords from inventory file:
 
+```yaml
+---
 - name: Playbook to configure IPA server
   hosts: ipaserver
   become: true
@@ -105,6 +116,7 @@ Example playbook to setup the IPA server using admin and dirman passwords from i
   roles:
   - role: ipaserver
     state: present
+```
 
 Example playbook to setup the IPA primary with external signed CA using the previous inventory file:
 
@@ -135,6 +147,7 @@ Sign with CA: This is up to you
 Server installation step 2: Copy `<ipaserver hostname>-chain.crt` to the IPA server and continue with installation of the primary.
 
 ```yaml
+---
 - name: Playbook to configure IPA server step3
   hosts: ipaserver
   become: true