Raise warlock requirement

Glance PATCH API need use new 'require' condition for schema to validate
income requests.

Raise warlock requirement to >=1.0.1,<2 as older warlock requires a too
old jsonschema to be useful.

See bug #1202391 for details.

Change-Id: I0ac148850a5b1254bf0827c7de2db1464a6703d8
Signed-off-by: Zhi Yan Liu <zhiyanl@cn.ibm.com>
Merge "Raise warlock requirement"