EL7 main service file requires mandatory environment file

note, that this is not the case for the instantiated, which is in sync
with everything else.

Signed-off-by: Jakub Jelen <jjelen@redhat.com>

templates/sshd.service.j2

@@ -13,7 +13,7 @@ Documentation=man:sshd(8) man:sshd_config(5)
 [Service]
 Type=notify
 {% if __sshd_environment_file is string %}
-EnvironmentFile=-{{ __sshd_environment_file }}
+EnvironmentFile={{ __sshd_environment_file_mandatory | ternary('', '-')}}{{ __sshd_environment_file }}
 {% elif __sshd_environment_file is iterable %}
 {%   for file in __sshd_environment_file %}
 EnvironmentFile=-{{ file }}

vars/RedHat_7.yml

@@ -33,6 +33,7 @@ __sshd_hostkeys_nofips:
   - /etc/ssh/ssh_host_ed25519_key
 
 __sshd_environment_file: /etc/sysconfig/sshd
+__sshd_environment_file_mandatory: true
 __sshd_environment_variable: $OPTIONS
 __sshd_service_after: sshd-keygen.service
 __sshd_service_wants: sshd-keygen.service

vars/main.yml

@@ -67,6 +67,7 @@ __sshd_supports_validate: true
 
 # The path to an environment file for the SSHD service
 __sshd_environment_file: ~
+__sshd_environment_file_mandatory: false
 
 # The variable name we are passing from the environment file as an argument to the sshd
 __sshd_environment_variable: $OPTIONS