We need to check LB "provisioning_status" in addition to
"operating_status" to make sure that the LB is ACTIVE.
Improve Netcat command used to emulate HTTP server/stub on Cirros
members. Current implementation doesn't send any HTTP response
header back to client (not standard HTTP) and tools like: WGET and CURL
are facing issues because of that, for example:
CURL - "curl: (56) Recv failure: Connection reset by peer"
WGET - "Length: unspecified" + retries.
Change-Id: I650d7bc09a19264f8a9f811b6cd5bac7a26c107e
0e1ed4901c