v3.11.0 (#211)

- PHP 7.4 support
- Improved Webp images support with Cloudflare (Issue [#95](https://github.com/WordOps/WordOps/issues/95)). Nginx will not serve webp images alternative with Cloudflare IP ranges.
- Stack upgrade for adminer
- Check acme.sh installation and setup acme.sh if needed before issuing certificate
- Add `--ufw` to `wo stack status`
- Add Nginx directive `gzip_static on;` to serve precompressed assets with Cache-Enabler or WP-Rocket. (Issue [#207](https://github.com/WordOps/WordOps/issues/207))
- Previous `--php73` & `--php73=off` flags are replaced by `--php72`, `--php73`, `--php74` to switch site's php version
- phpMyAdmin updated to v4.9.2
- Adminer updated to v4.7.5
- Replace dot and dashes by underscores in database names (Issue [#206](https://github.com/WordOps/WordOps/issues/206))
- Increased database name length to 32 characters from domain name + 8 random characters
- typo error in motd-news script (Issue [#204](https://github.com/WordOps/WordOps/issues/204))
- Install Nginx before ngxblocker
- WordOps install/update script text color
- Issue with MySQL stack on Raspbian 9/10
- Typo error  (PR [#205](https://github.com/WordOps/WordOps/pull/205))
- php version in `wo debug` (PR [#209](https://github.com/WordOps/WordOps/pull/209))
- SSL certificates expiration display with shared wildcard certificates

wo/cli/templates/upstream.mustache

@@ -1,4 +1,4 @@
-# NGINX UPSTREAM CONFIGURATION - WO v3.9.8
+# NGINX UPSTREAM CONFIGURATION - WordOps {{release}}
 # DO NOT MODIFY, ALL CHANGES WILL BE LOST AFTER AN WordOps (wo) UPDATE
 #-------------------------------
 # PHP 5.6
@@ -41,8 +41,8 @@ upstream php72 {
 
 # PHP 7.2 debug
 upstream debug72 {
-# Debug Pool
-server 127.0.0.1:9172;
+    # Debug Pool
+    server 127.0.0.1:9172;
 }
 
 #-------------------------------
@@ -61,10 +61,30 @@ upstream php73 {
 
 # PHP 7.3 debug
 upstream debug73 {
-# Debug Pool
+    # Debug Pool
     server 127.0.0.1:9173;
 }
 
+#-------------------------------
+# PHP 7.4
+#-------------------------------
+
+# PHP 7.4 upstream with load-balancing on two unix sockets
+upstream php74 {
+    least_conn;
+
+    server unix:/var/run/php/php74-fpm.sock;
+    server unix:/var/run/php/php74-two-fpm.sock;
+
+    keepalive 5;
+}
+
+# PHP 7.4 debug
+upstream debug74 {
+    # Debug Pool
+    server 127.0.0.1:9174;
+}
+
 #-------------------------------
 # Netdata
 #-------------------------------