Add tests for machine before running backup

data/borgmatic.d/home.yaml

@@ -13,3 +13,8 @@ keep_daily: 7
 keep_weekly: 4
 keep_monthly: 12
 keep_yearly: 10
+
+commands:
+  - before: configuration
+    run:
+      - uname -a | grep "deb" > /dev/null || exit 75

data/borgmatic.d/smartphone.yaml

@@ -15,3 +15,8 @@ keep_daily: 7
 keep_weekly: 4
 keep_monthly: 12
 keep_yearly: 10
+
+commands:
+  - before: configuration
+    run:
+      - uname -a | grep "deb" > /dev/null || exit 75

data/borgmatic.d/windows.yaml

@@ -10,4 +10,9 @@ keep_hourly: 10
 keep_daily: 7
 keep_weekly: 4
 keep_monthly: 12
-keep_yearly: 10
+keep_yearly: 10
+
+commands:
+  - before: configuration
+    run:
+      - uname -a | grep "microsoft" > /dev/null || exit 75