Set wsgi startup log level to INFO

Sets wsgi startup log to INFO so that it is
still visible when log level is raised above
DEBUG.

Co-authored-by: Kanami Akama <k-akama@intellilink.co.jp>
Fixes: bug #1208778

Change-Id: I977f4ac6fc5e11710922dc607d5ce23a0cc74237
Merge "Set wsgi startup log level to INFO"