extend settings

add setting for ssh identity file for disk export to user store
add setting to choose from scp or rsync to export disk to user store
add setting for export datastore

circle/circle/settings/base.py

@@ -610,6 +610,10 @@ STORE_CLIENT_PASSWORD = get_env_variable("STORE_CLIENT_PASSWORD", "")
 STORE_CLIENT_KEY = get_env_variable("STORE_CLIENT_KEY", "")
 STORE_CLIENT_CERT = get_env_variable("STORE_CLIENT_CERT", "")
 STORE_URL = get_env_variable("STORE_URL", "")
+STORE_IDENTITY_FILE = get_env_variable("STORE_IDENTITY_FILE", "")
+# possible options are "scp", or "rsync"
+STORE_SSH_MODE = get_env_variable("STORE_SSH_MODE", "scp")
+EXPORT_DATASTORE = get_env_variable("EXPORT_DATASTORE", "default")
 
 SESSION_COOKIE_NAME = "csessid%x" % (((getnode() // 139) ^
                                       (getnode() % 983)) & 0xffff)