Increase trove gate job timeout
Increase trove gate job timeout

Increase timeout for trove gate job, gate-trove-functional-dsvm from
95 to 105 minutes and the corresponding devstack timeout to 100
minutes.

New code added for Kilo has increased the time required for some of
the tests and we are falling just under the threshold.

Change-Id: Ic63bb635785719a19deae0d43cae78e39731e3a3

Tesora/tesora-project-config,openstack-infra/project-config,openstack-infra/project-config,dongwenjuan/project-config,dongwenjuan/project-config,citrix-openstack/project-config,citrix-openstack/project-config,anbangr/osci-project-config,noorul/os-project-config,coolsvap/project-config,coolsvap/project-config,anbangr/osci-project-config,Tesora/tesora-project-config,noorul/os-project-config