heatclient : correct timeout parameter name

The timeout parameter needs to be timeout_mins to match the
engine API or the parameter will not be recognized by the
engine.

fixes bug 1129348

Change-Id: I489364a2abed376f35bf2da24915db30c982e61b
Signed-off-by: Steven Hardy <shardy@redhat.com>
heatclient : Add --disable-rollback option

Adds -D/--disable-rollback option to align with new heat-cfn
option

Change-Id: I4a997df0b63d19a25f2047710809a80520187f9f
Signed-off-by: Steven Hardy <shardy@redhat.com>