docs/ansible: Align the "warn/info" notices style

Motivated by the 4d546a58e1243168f58e20ca53cab71b31e44ae9 changes.

website/source/docs/provisioning/ansible.html.md

@@ -14,10 +14,8 @@ description: |-
 The Vagrant Ansible provisioner allows you to provision the guest using [Ansible](http://ansible.com) playbooks by executing **`ansible-playbook` from the Vagrant host**.
 
 <div class="alert alert-warning">
-  <strong>Warning:</strong> If you are not familiar with Ansible and Vagrant already,
+  <strong>Warning:</strong>
-  I recommend starting with the <a href="/docs/provisioning/shell.html">shell
+  If you are not familiar with Ansible and Vagrant already, I recommend starting with the <a href="/docs/provisioning/shell.html">shell provisioner</a>. However, if you are comfortable with Vagrant already, Vagrant is a great way to learn Ansible.
-  provisioner</a>. However, if you are comfortable with Vagrant already, Vagrant
-  is a great way to learn Ansible.
 </div>
 
 ## Setup Requirements
@@ -74,7 +72,10 @@ This section lists the _specific_ options for the Ansible (remote) provisioner.
 
     The default value is `true`.
 
-    **Note:** This option was introduced in Vagrant 1.8.0. Previous Vagrant versions behave like if this option was set to `false`.
+    <div class="alert alert-info">
+      <strong>Compatibility Note:</strong>
+      This option was introduced in Vagrant 1.8.0. Previous Vagrant versions behave like if this option was set to `false`.
+    </div>
 
 - `host_key_checking` (boolean) - require Ansible to [enable SSH host key checking](https://docs.ansible.com/intro_getting_started.html#host-key-checking).
 
@@ -122,9 +123,10 @@ N = 3
 end
 ```
 
-**Caveats:**
+<div class="alert alert-info">
-
+  <strong>Tip:</strong>
   If you apply this parallel provisioning pattern with a static Ansible inventory, you will have to organize the things so that [all the relevant private keys are provided to the `ansible-playbook` command](https://github.com/mitchellh/vagrant/pull/5765#issuecomment-120247738). The same kind of considerations applies if you are using multiple private keys for a same machine (see [`config.ssh.private_key_path` SSH setting](/docs/vagrantfile/ssh_settings.html)).
+</div>
 
 ### Force Paramiko Connection Mode
 

website/source/docs/provisioning/ansible_common.html.md

@@ -150,7 +150,10 @@ Some of these options are for advanced usage only and should not be used unless
     - `['--check', '-M', '/my/modules']`
     - `["--connection=paramiko", "--forks=10"]`
 
-    **Caveat:** The `ansible` provisioner does not support whitespace characters in `raw_arguments` elements. Therefore **don't write** something like `["-c paramiko"]`, which will result with an invalid `" parmiko"` parameter value.
+    <div class="alert alert-warn">
+      <strong>Attention:</strong>
+      The `ansible` provisioner does not support whitespace characters in `raw_arguments` elements. Therefore **don't write** something like `["-c paramiko"]`, which will result with an invalid `" parmiko"` parameter value.
+    </div>
 
 - `skip_tags` (string or array of strings) - Only plays, roles and tasks that [*do not match* these values will be executed](https://docs.ansible.com/playbooks_tags.html).
 

website/source/docs/provisioning/ansible_local.html.md

@@ -14,10 +14,8 @@ description: |-
 The Vagrant Ansible Local provisioner allows you to provision the guest using [Ansible](http://ansible.com) playbooks by executing **`ansible-playbook` directly on the guest machine**.
 
 <div class="alert alert-warning">
-  <strong>Warning:</strong> If you are not familiar with Ansible and Vagrant already,
+  <strong>Warning:</strong>
-  I recommend starting with the <a href="/docs/provisioning/shell.html">shell
+  If you are not familiar with Ansible and Vagrant already, I recommend starting with the <a href="/docs/provisioning/shell.html">shell provisioner</a>. However, if you are comfortable with Vagrant already, Vagrant is a great way to learn Ansible.
-  provisioner</a>. However, if you are comfortable with Vagrant already, Vagrant
-  is a great way to learn Ansible.
 </div>
 
 ## Setup Requirements
@@ -67,7 +65,10 @@ This section lists the _specific_ options for the Ansible Local provisioner. In
     - The `version` option is set to `"latest"`.
     - The current Ansible version does not correspond to the `version` option.
 
-    **Attention:** There is no guarantee that this automated installation will replace a custom Ansible setup, that might be already present on the Vagrant box.
+    <div class="alert alert-warning">
+      <strong>Attention:</strong>
+      There is no guarantee that this automated installation will replace a custom Ansible setup, that might be already present on the Vagrant box.
+    </div>
 
 - `install_mode` (`:default`, `:pip`, or `:pip_args_only`) - Select the way to automatically install Ansible on the guest system.
 
@@ -148,7 +149,10 @@ This section lists the _specific_ options for the Ansible Local provisioner. In
 
     When this option is set to `"latest"`, no version check is applied.
 
-    **Warning:** It is currently possible to use this option to specify which version of Ansible must be automatically installed, but only in combination with the `install_mode` set to `:pip`.
+    <div class="alert alert-info">
+      <strong>Tip:</strong>
+      It is currently possible to use this option to specify which version of Ansible must be automatically installed, but <strong>only</strong> in combination with the `install_mode` set to <strong>`:pip`</strong>.
+    </div>
 
 ## Tips and Tricks