eclass-overlay: Add virtaccess group

This will allow multiple users to have access to virtualization device files.

TEST=build_packages --board=sarien; build_image --board=sarien; crosvm
can start
CQ-DEPEND=CL:1497153, CL:1496492

Change-Id: Ib63802908569264c668262bcb046bb6972db8365
Commit-Ready: ChromeOS CL Exonerator Bot <>
Tested-by: Trent Begin <>
Reviewed-by: Trent Begin <>
diff --git a/profiles/base/accounts/group/virtaccess b/profiles/base/accounts/group/virtaccess
new file mode 100644
index 0000000..69119ac
--- /dev/null
+++ b/profiles/base/accounts/group/virtaccess
@@ -0,0 +1,4 @@
+# This group will own device files required for using VMs on the system