Bump up timeout on swift-probetests-centos-8-arm64 job
Bump up timeout on swift-probetests-centos-8-arm64 job

We have seen a fair number of timeouts on this lately.

Change-Id: I8c77c3c7e724768bf40d6d33bfbe72604fd4f6bd

tipabu/swift,openstack/swift,tipabu/swift,tipabu/swift,openstack/swift,openstack/swift,tipabu/swift,openstack/swift