TESTS: replace old test suite with the new one

get rid of Bats definitively

test/certs/README.md

@@ -0,0 +1,81 @@
+create_server_certificate.sh
+============================
+
+`create_server_certificate.sh` is a script helping with issuing server certificates that can be used to provide TLS on web servers.
+
+It also creates a Certificate Authority (CA) root key and certificate. This CA root certificate can be used to validate the server certificates it generates.
+
+For instance, with _curl_:
+
+    curl --cacert /somewhere/ca-root.crt https://www.example.com/
+
+or with _wget_:
+
+    wget --certificate=/somewhere/ca-root.crt https://www.example.com/
+
+or with the python _requests_ module:
+
+    import requests
+    r = requests.get("https://www.example.com", verify="/somewhere/ca-root.crt")
+
+Usage
+-----
+
+### Simple domain
+
+Create a server certificate for domain `www.example.com`:
+
+    ./create_server_certificate.sh www.example.com
+
+Will produce:
+ - `www.example.com.key`
+ - `www.example.com.crt`
+
+
+### Multiple domains 
+
+Create a server certificate for main domain `www.example.com` and alternative domains `example.com`, `foo.com` and `bar.com`:
+
+    ./create_server_certificate.sh www.example.com foo.com bar.com
+
+Will produce:
+ - `www.example.com.key`
+ - `www.example.com.crt`
+ 
+### Wildcard domain
+
+Create a server certificate for wildcard domain `*.example.com`:
+
+    ./create_server_certificate.sh "*.example.com"
+
+Note that you need to use quotes around the domain string or the shell would expand `*`.
+
+Will produce:
+ - `*.example.com.key`
+ - `*.example.com.crt`
+
+Again, to prevent your shell from expanding `*`, use quotes. i.e.: `cat "*.example.com.crt"`.
+
+Such a server certificate would be valid for domains:
+- `foo.example.com` 
+- `bar.example.com`
+
+but not for domains:
+- `example.com`
+- `foo.bar.example.com`
+
+
+### Wildcard domain on multiple levels
+
+While you can technically create a server certificate for wildcard domain `*.example.com` and alternative name `*.*.example.com`, client implementations generally do not support multiple wildcards in a domain name.
+
+For instance, a python script using urllib3 would fail to validate domain `foo.bar.example.com` presenting a certificate with name `*.*.example.com`. It is advised to stay away from producing such certificates.
+
+If you want to give it a try:
+
+    ./create_server_certificate.sh "*.example.com" "*.*.example.com"
+
+Such a server certificate would be valid for domains:
+- `foo.example.com` 
+- `bar.example.com`
+- `foo.bar.example.com`