Update defaults and add tests for them

test/valid-config-default-values.hcl

@@ -1,6 +1,11 @@
 check_interval = "1s"
 default_alert_down = ["log_command"]
-default_alert_after = 1
+default_alert_every = 0
+default_alert_after = 2
+
+monitor "Default" {
+  command = ["echo"]
+}
 
 monitor "Command" {
   command = ["echo", "$PATH"]

test/valid-config.hcl

@@ -8,6 +8,11 @@ alert "log_shell" {
   shell_command = "echo \"Failure on {{.MonitorName}} User is $USER\""
 }
 
+monitor "Default" {
+  command = ["echo"]
+  alert_down = ["log_command"]
+}
+
 monitor "Command" {
   command =  ["echo", "$PATH"]
   alert_down =  ["log_command", "log_shell"]

test/valid-config.yml

@@ -1,25 +0,0 @@
----
-check_interval: 1s
-
-monitors:
-  - name: Command
-    command: ["echo", "$PATH"]
-    alert_down: ["log_command", "log_shell"]
-    alert_every: 0
-    check_interval: 10s
-  - name: Shell
-    command: >
-      echo 'Some string with stuff';
-      echo 'another line';
-      echo $PATH;
-      exit 1
-    alert_down: ["log_command", "log_shell"]
-    alert_after: 5
-    alert_every: 0
-    check_interval: 1m
-
-alerts:
-  log_command:
-    command: ["echo", "regular", '"command!!!"', "{{.MonitorName}}"]
-  log_shell:
-    command: echo "Failure on {{.MonitorName}} User is $USER"