ansible: fix trove rpc low timeout.
ansible: fix trove rpc low timeout.

Trove RPC low timeout was set to high timeout by mistake in commit
52afa076ff1065d0bf0285406d2623cffe7b8053.

Fixes: http://192.168.15.2/issues/10250

Signed-off-by: Zhao Chao <abb6a2f7e4fabebf6d227485f53d7acf834f1da2@gmail.com>

eayunstack/eayunstack-upgrade,eayunstack/eayunstack-upgrade,huntxu/eayunstack-upgrade,eayunstack/eayunstack-upgrade,huntxu/eayunstack-upgrade,eayunstack/eayunstack-upgrade,huntxu/eayunstack-upgrade,huntxu/eayunstack-upgrade