Add the bootstrap role to install archlinux w/testing

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+# Ansible Role: bootstrap
+
+This role bootstraps the installation of a linux distro
+
+## Role Variables
+
+- `hostname` the distro linux network hostname to be used.
+- `partition_boot` the boot partition definition for role `partition`, to install bootloader
+- `partition_root` the root partition definition for role `partition`, to install distro root
+
+## Dual Booting
+
+The role is configure for allowing dual boot multiple distros.
+For example, the following `archiso.local` and `ubuntuiso.local` diff shows how to do that
+
+```diff
++ hostname: "archlinux.local"
++ partition_wipe: true
+- hostname: "ubuntuiso.local"
+- partition_wipe: false
+  partition_disk: "/dev/sda"
+  partition_boot:
+    num: 1
+    name: "boot"
+    flags: [boot, esp]
+    part_start: "0%"
+    part_end: "1.0GiB"
+    fstype: "vfat"
+    fstype_opts: "-F 32"
+    dev: "{{ partition_disk }}1"
+    mount_path: "/mnt/boot"
+    fstab_opts: "defaults,nodev,nosuid,noexec,umask=0077"
+  partition_swap:
+    num: 2
+    name: "swap"
+    flags: [swap]
+    part_start: "1.0GiB"
+    part_end: "9.0GiB"
+    fstype: "ext4"
+    dev: "{{ partition_disk }}2"
+    mount_path: "none"
+  partition_root:
++   num: 3
++   name: "archlinux"
++   part_start: "9.0GiB"
++   part_end: "59.0GiB"
++   fstype: "ext4"
++   dev: "{{ partition_disk }}3"
+-   num: 4
+-   name: "ubuntu"
+-   part_start: "59.0GiB"
+-   part_end: "119.0GiB"
+-   fstype: "ext4"
+-   dev: "{{ partition_disk }}4"
+    mount_path: "/mnt"
+  partition_extras:
++   - num: 4
++     name: "ubuntu"
++     part_start: "59.0GiB"
++     part_end: "119.0GiB"
++     fstype: "ext4"
++     dev: "{{ partition_disk }}4"
+-   - num: 3
+-     name: "archlinux"
+-     part_start: "9.0GiB"
+-     part_end: "59.0GiB"
+-     fstype: "ext4"
+-     dev: "{{ partition_disk }}3"
+    - num: 5
+      name: "other_partiton"
+      part_start: "119.0GiB"
+      part_end: "100%"
+      fstype: "ext4"
+      dev: "{{ partition_disk }}5"
+```
+
+In other words, swap the `partition_root` configuration with the partition that is used for the installation,
+and keep the rest of the mapping exactly the same.
+
+It's required that the first system to be installed for dual booting (`archlinux` in the previous example),
+sets the `partition_wipe` parameter to `true` in order to wipe the hard drive and partition it correctly,
+while the other systems (`ubuntu` in the previous example) sets the `partition_wipe` to `false`.
+
+Otherwise, the hard drive will be wiped and repartitioned again.