feat: drop support for EOL OS's

Debian 8/9 and Ubuntu 16.04

README.md

@@ -44,12 +44,9 @@ Supported Linux distributions and versions:
 - Rocky Linux 8
 - Debian 11
 - Debian 10
-- Debian 9
-- Debian 8
 - Ubuntu 22.04
 - Ubuntu 20.04
 - Ubuntu 18.04
-- Ubuntu 16.04
 
 Only x86_64 architecture is supported. For all those raspberry pi users out there, check [container](https://hub.docker.com/r/ronivay/xen-orchestra) instead.
 

xo-install.sh

@@ -1278,13 +1278,13 @@ function CheckOS {
         exit 1
     fi
 
-    if [[ "$OSNAME" == "Debian" ]] && [[ ! "$OSVERSION" =~ ^(8|9|10|11)$ ]]; then
-        printfail "Only Debian 8/9/10/11 supported"
+    if [[ "$OSNAME" == "Debian" ]] && [[ ! "$OSVERSION" =~ ^(10|11)$ ]]; then
+        printfail "Only Debian 10/11 supported"
         exit 1
     fi
 
-    if [[ "$OSNAME" == "Ubuntu" ]] && [[ ! "$OSVERSION" =~ ^(16|18|20|22)$ ]]; then
-        printfail "Only Ubuntu 16/18/20/22 supported"
+    if [[ "$OSNAME" == "Ubuntu" ]] && [[ ! "$OSVERSION" =~ ^(18|20|22)$ ]]; then
+        printfail "Only Ubuntu 18/20/22 supported"
         exit 1
     fi