Parameterize service-prober probing interval

roles/service-prober/defaults/main.yml

+---
+
+# Interval and timeouts for service probes
+service_prober_interval: "180s"
+service_prober_timeout: "2m"
+service_prober_roundtrip_timeout: "10m"
+

roles/service-prober/vars/main.yml

@@ -15,8 +15,8 @@ service_prober_config:
   # Deliver email from local user to itself.
   - name: "email-roundtrip-local/${credentials.username}/${servers}"
     type: imap_roundtrip
-    timeout: 5m
-    interval: 90s
+    timeout: "{{ service_prober_roundtrip_timeout }}"
+    interval: "{{ service_prober_interval }}"
     labels:
       probeset: custom
     loop:
@@ -40,8 +40,8 @@ service_prober_config:
   # Deliver email from an external account to a local one.
   - name: "email-roundtrip-incoming/${credentials.username}/${servers}"
     type: imap_roundtrip
-    timeout: 5m
-    interval: 90s
+    timeout: "{{ service_prober_roundtrip_timeout }}"
+    interval: "{{ service_prober_interval }}"
     labels:
       probeset: custom
     loop:
@@ -65,8 +65,8 @@ service_prober_config:
   # Deliver email from a local account to an external one.
   - name: "email-roundtrip-outgoing/${credentials.username}/${servers}"
     type: imap_roundtrip
-    interval: 90s
-    timeout: 5m
+    timeout: "{{ service_prober_roundtrip_timeout }}"
+    interval: "{{ service_prober_interval }}"
     labels:
       probeset: custom
     loop:
@@ -90,8 +90,8 @@ service_prober_config:
   # HTTP interaction to log in to accounts.autistici.org and then the webmail.
   - name: "pannello/${credentials.username}"
     type: http
-    interval: 2m
-    timeout: 2m
+    timeout: "{{ service_prober_timeout }}"
+    interval: "{{ service_prober_interval }}"
     labels:
       probeset: custom
     loop:
@@ -115,8 +115,8 @@ service_prober_config:
   # Noblogs.org login.
   - name: "noblogs-login/${noblogs_credentials.username}"
     type: http
-    interval: 5m
-    timeout: 5m
+    timeout: "{{ service_prober_timeout }}"
+    interval: "{{ service_prober_interval }}"
     labels:
       probeset: custom
     loop: