oeqa/utils/httpserver: allow to pass in listening port

Being able to specify the listening port is useful when
running OEQA from within a docker container, e.g.
crops or any other solution.
In that case, a port on the outside must be mapped to a
specific port inside the container. If no port is specified
for the http server module in this case, the http server
would choose a random port, which is unlikely to be mapped
and thus won't be reachable from the outside.

(From OE-Core rev: e54391ca9068661693275fbfcfded9bc0b2606f3)

Signed-off-by: André Draszik <git@andred.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/utils/httpserver.py

@@ -22,10 +22,10 @@ class HTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
 
 class HTTPService(object):
 
-    def __init__(self, root_dir, host='', logger=None):
+    def __init__(self, root_dir, host='', port=0, logger=None):
         self.root_dir = root_dir
         self.host = host
-        self.port = 0
+        self.port = port
         self.logger = logger
 
     def start(self):