Drop Debian 7/8/9; Add 10/11; Drop Ubuntu 14/16; Add 20.04

Signed-off-by: Christos Papageorgiou <christos.papageorgioy@gmail.com>

Drop Debian 7/8/9; Add 10/11; Drop Ubuntu 14/16; Add 20.04
afc8194b · Christos Papageorgiou · d04734b6 · afc8194b
Unverified Commit afc8194b authored Aug 25, 2021 by Christos Papageorgiou
--- a/metadata.json
+++ b/metadata.json
@@ -29,17 +29,15 @@
    {
      "operatingsystem": "Debian",
      "operatingsystemrelease": [
-        "7",
+        "10",
-        "8",
+        "11"
-        "9"
      ]
    },
    {
      "operatingsystem": "Ubuntu",
      "operatingsystemrelease": [
-        "14.04",
+        "18.04",
-        "16.04",
+        "20.04"
-        "18.04"
      ]
    },
    {