fix conflicts, add keys generation commands

Signed-off-by: Firas Ghanmi <fghanmi@redhat.com>

config/tls/key_cert_generation.md

@@ -0,0 +1,21 @@
+# Generation of ct_server key/cert and CA certficate
+
+## Commands
+
+```
+# 1. Generate CA's private key and self-signed certificate
+openssl req -x509 -newkey rsa:4096 -days 36500 -nodes -keyout ca.key -out ca.crt -subj "/CN=My CA"
+
+# 2. Generate ct_server's private key and certificate signing request (CSR)
+openssl req -newkey rsa:4096 -nodes -keyout tls.key -out server-req.pem -subj "/=Server TLS/OU=Server/CN=*/emailAddress=tls@gmail.com"
+
+# 3. SAN
+echo "subjectAltName=DNS:*,DNS:ct_server,IP:0.0.0.0" > server-ext.cnf
+
+# 3. Use CA's private key to sign ct_server's CSR and get back the signed certificate
+openssl x509 -req -in server-req.pem -days 60 -CA ca.crt -CAkey ca.key -CAcreateserial -out tls.crt -extfile server-ext.cnf
+
+# 4. Clean-up 
+rm ca.key ca.srl server-ext.cnf server-req.pem
+
+```