fix reactor config test in requirements we install specific version of jsonschema 2.3.0 which available in RHEL/CentOS 7, but for newer versions of jsonschema the error message changes and it no longer shows -1.0, but -1
fix reactor config test
in requirements we install specific version of jsonschema 2.3.0
which available in RHEL/CentOS 7, but for newer versions of jsonschema
the error message changes and it no longer shows -1.0, but -1

Signed-off-by: Robert Cerven <32de7a518694880140ad479fa3724b97728d8e88@redhat.com>

DBuildService/atomic-reactor,fr34k8/atomic-reactor,projectatomic/atomic-reactor,fr34k8/atomic-reactor,projectatomic/atomic-reactor,DBuildService/atomic-reactor