[FIX]: Handle case when AF_BLUETOOTH unavailable

[gmacario]

📑 Description

Make sure the scripts do not stop in case AF_BLUETOOTH network Address Family is not available.

Closes #39

✅ Checks

• [x] My pull request adheres to the code style of this project
• [x] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [x] All the tests have passed

ℹ Additional Information

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[gmacario]

Testing inside a LXC container

root@arolto-ubnt201:~# curl -fsSL https://deploy-preview-40--ble-testsuite.netlify.app/install-freisa.sh | sh
Hit:1 http://archive.ubuntu.com/ubuntu jammy InRelease
Get:2 http://archive.ubuntu.com/ubuntu jammy-updates InRelease [119 kB]    
Get:3 https://pkgs.tailscale.com/stable/ubuntu jammy InRelease             
Get:4 http://archive.ubuntu.com/ubuntu jammy-security InRelease [110 kB]
Get:5 http://archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages [1041 kB]
Get:6 http://archive.ubuntu.com/ubuntu jammy-updates/universe Translation-en [235 kB]
Fetched 1512 kB in 2s (891 kB/s)                                
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
/usr/bin/bluetoothctl
/usr/bin/curl
/usr/bin/expect
/usr/bin/lsb_release
/usr/bin/lsof
/usr/bin/lsusb
/usr/bin/tailscale
Linux arolto-ubnt201 6.5.11-7-pve #1 SMP PREEMPT_DYNAMIC PMX 6.5.11-7 (2023-12-05T09:44Z) x86_64 x86_64 x86_64 GNU/Linux
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.3 LTS
Release:        22.04
Codename:       jammy
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version         Architecture Description
+++-==============-===============-============-=================================
ii  bluez          5.64-0ubuntu1.1 amd64        Bluetooth tools and daemons
192.168.69.147 
Can't open HCI socket.: Address family not supported by protocol
# Executing docker install script, commit: e5543d473431b782227f8908005543bb4389b8de
apt-get update -qq >/dev/null
DEBIAN_FRONTEND=noninteractive apt-get install -y -qq apt-transport-https ca-certificates curl gnupg >/dev/null
install -m 0755 -d /etc/apt/keyrings
curl -fsSL "https://download.docker.com/linux/ubuntu/gpg" | gpg --dearmor --yes -o /etc/apt/keyrings/docker.gpg
chmod a+r /etc/apt/keyrings/docker.gpg
echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu jammy stable" > /etc/apt/sources.list.d/docker.list
apt-get update -qq >/dev/null
DEBIAN_FRONTEND=noninteractive apt-get install -y -qq docker-ce docker-ce-cli containerd.io docker-compose-plugin docker-ce-rootless-extras docker-buildx-plugin >/dev/null
# Executing docker install script, commit: e5543d473431b782227f8908005543bb4389b8de
+ sh -c apt-get update -qq >/dev/null
+ sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq apt-transport-https ca-certificates curl gnupg >/dev/null
+ sh -c install -m 0755 -d /etc/apt/keyrings
+ sh -c curl -fsSL "https://download.docker.com/linux/ubuntu/gpg" | gpg --dearmor --yes -o /etc/apt/keyrings/docker.gpg
+ sh -c chmod a+r /etc/apt/keyrings/docker.gpg
+ sh -c echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu jammy stable" > /etc/apt/sources.list.d/docker.list
+ sh -c apt-get update -qq >/dev/null
+ sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq docker-ce docker-ce-cli containerd.io docker-compose-plugin docker-ce-rootless-extras docker-buildx-plugin >/dev/null
+ sh -c docker version
Client: Docker Engine - Community
 Version:           25.0.1
 API version:       1.44
 Go version:        go1.21.6
 Git commit:        29cf629
 Built:             Tue Jan 23 23:09:23 2024
 OS/Arch:           linux/amd64
 Context:           default

Server: Docker Engine - Community
 Engine:
  Version:          25.0.1
  API version:      1.44 (minimum version 1.24)
  Go version:       go1.21.6
  Git commit:       71fa3ab
  Built:            Tue Jan 23 23:09:23 2024
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.27
  GitCommit:        a1496014c916f9e62104b33d1bb5bd03b0858e59
 runc:
  Version:          1.1.11
  GitCommit:        v1.1.11-0-g4bccb38
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

================================================================================

To run Docker as a non-privileged user, consider setting up the
Docker daemon in rootless mode for your user:

    dockerd-rootless-setuptool.sh install

Visit https://docs.docker.com/go/rootless/ to learn about rootless mode.

To run the Docker daemon as a fully privileged service, but granting non-root
users access, refer to https://docs.docker.com/go/daemon-access/

WARNING: Access to the remote API on a privileged Docker daemon is equivalent
         to root access on the host. Refer to the 'Docker daemon attack surface'
         documentation for details: https://docs.docker.com/go/attack-surface/

================================================================================

root@arolto-ubnt201:~#

LGTM, @alv67 please review and merge if LGTY as well.

[alv67]

I need some explanation. Let's talk about it tomorrow.