vendor: update agent grpc

To include SandboxId in CreateSandboxRequest.

Included commits:
745fa71 (origin/pr/309) agent: set sandbox id log field in CreateSandbox
a3321f4 (origin/pr/304) vendor: Revendor netlink to fix PID 1 segfault
a9ade15 (origin/pr/293) agent: Add sandbox level reference counter for sandbox storage
5f89c07 (origin/pr/263) yamux: disable yamux keep alive in server channel
815f831 (origin/pr/303) agent: do not quit on grpc serve errors
8abefd1 (origin/pr/301) protocols/client: close yamux session when closing the stream
67643cf (origin/pr/297) agent: Fix CPU tests for both initrd and rootfs image
cf8d3c8 (origin/pr/295) agent: disable yamux keep alive
ed656df (origin/pr/284) grpc: Ignore WriteStdin after the standard input has been closed
1a52204 grpc: Don't close the terminal on CloseStdin() call
04457e3 (origin/pr/292) logging: Add sandbox field
ba2a32a (origin/pr/286) create: Reduce cyclomatic complexity of CreateContainer
bce5f78 (origin/pr/289) logging: Redirect yamux warnings/errors to logger
23311ea namespace: Add check to make sure PID namespace is not received
7fe2eba (origin/pr/273) release: Kata Containers 1.1.0
4ef4971 (origin/pr/277) travis: Enable travis ci for ppc64le
57bf4e6 (origin/pr/279) namespace: do not create path using rand.
a589bdb (origin/pr/275) CI: update static-checks.sh in travis.yml
1372df2 (origin/pr/271) logging: Fix handling of non-string fields when PID 1
4018add (origin/pr/269) agent: honour CPU constraints when agent is the init process
1cff660 (origin/pr/268) mount: Remove redundant mkdir
cc74b5d (origin/pr/266) network: Setup localhost when running as init
dc06ec7 network: Add extra sanity checks
b580ae7 network: Check all function parameters
ee106e9 main: Exit(1) on error
5bf3909 network: Reduce cyclomatic complexity
cdf9bce namespace: Simplify code
0d7f36f (origin/pr/260) agent: update container cpuset cgroup parents
4cf1809 (origin/pr/258) agent: update container cpuset cgroup before setting the new configuration
d70e5bb agent: don't modify container's config
a30395a (origin/pr/253) grpc: signal frozen containers

Signed-off-by: Peng Tao <bergwolf@gmail.com>

Gopkg.toml

@@ -60,7 +60,7 @@
 
 [[constraint]]
   name = "github.com/kata-containers/agent"
-  revision = "f6db83c952e3042ed7b527a1bd576e6b888f4f75"
+  revision = "061f7a6154344c07b7e3c337c2dac33082fe51ec"
 
 [[constraint]]
   name = "github.com/containerd/cri-containerd"