Switch create_server timeout to default value

Switch create_server timeout to default value

60s was successfully reached when running all containers (3
containers * 3 branches) in parallel.

It also removes the wait attribute (the current impl will meet
a possible next asynchronous design) which is useless here.

For the time being, only cloudify needs an extra timeout.

Change-Id: Ic7741b4c1a3223be076fb69ef70a3cb6c05456c2
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
(cherry picked from commit 1b75bbbc4e842ca2c8c14957261c88692f9e4828)