Add certificates option for etcd

config.py

@@ -7,7 +7,7 @@ from ldap_manager import LdapManager
 
 config_file = os.environ.get('meow-pay-config-file', default='pay.conf')
 
-config = configparser.ConfigParser()
+config = configparser.ConfigParser(allow_no_value=True)
 
 try:
     successfully_read_files = config.read(config_file)
@@ -18,7 +18,11 @@ if not successfully_read_files:
     sys.exit(f'Config file {config_file} couldn\'t be read.')
 
 try:
-    etcd_client = EtcdWrapper(host=config.get('etcd', 'host'), port=config.get('etcd', 'port'))
+    etcd_client = EtcdWrapper(
+        host=config.get('etcd', 'host'), port=config.get('etcd', 'port'),
+        ca_cert=config.get('etcd', 'ca_cert'), cert_key=config.get('etcd', 'cert_key'),
+        cert_cert=config.get('etcd', 'cert_cert')
+    )
 
     ldap_manager = LdapManager(
         server=config.get('ldap', 'server'), admin_dn=config.get('ldap', 'admin_dn'),

sample-pay.conf

@@ -1,6 +1,9 @@
 [etcd]
 host = 127.0.0.1
 port = 2379
+ca_cert
+cert_cert
+cert_key
 
 [stripe]
 private_key=stripe_private_key