Adjust template to new version

Signed-off-by: Knut Ahlers <knut@ahlers.me>

templates/health_alarm_notify.conf

@@ -94,6 +94,15 @@ curl=""
 # multiple recipients can be given like this:
 #              "admin1@example.com admin2@example.com ..."
 
+# the email address sending email notifications
+# the default is the system user netdata runs as (usually: netdata)
+# The following formats are supported:
+# EMAIL_SENDER="user@domain"
+# EMAIL_SENDER="User Name <user@domain>"
+# EMAIL_SENDER="'User Name' <user@domain>"
+# EMAIL_SENDER="\"User Name\" <user@domain>"
+EMAIL_SENDER="{{ env `EMAIL_SENDER` }}"
+
 # enable/disable sending emails
 SEND_EMAIL="{{ env `SEND_EMAIL` `YES` }}"
 
@@ -101,6 +110,13 @@ SEND_EMAIL="{{ env `SEND_EMAIL` `YES` }}"
 DEFAULT_RECIPIENT_EMAIL="{{ env `DEFAULT_RECIPIENT_EMAIL` `root` }}"
 # to receive only critical alarms, set it to "root|critical"
 
+# Optionally specify the encoding to list in the Content-Type header.
+# This doesn't change what encoding the e-mail is sent with, just what
+# the headers say it was encoded as.
+# This shouldn't need to be changed as it will almost always be
+# autodetected from the environment.
+#EMAIL_CHARSET="UTF-8"
+
 
 #------------------------------------------------------------------------------
 # pushover (pushover.net) global notification options