Update containerd dependency from beta to release (#6773)

Signed-off-by: Martin Hickey <martin.hickey@ie.ibm.com>

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/Masterminds/vcs v1.13.0
 	github.com/Microsoft/go-winio v0.4.12 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a
-	github.com/containerd/containerd v1.3.0-beta.2.0.20190823190603-4a2f61c4f2b4
+	github.com/containerd/containerd v1.3.0
 	github.com/cyphar/filepath-securejoin v0.2.2
 	github.com/deislabs/oras v0.7.0
 	github.com/docker/distribution v2.7.1+incompatible

go.sum

@@ -71,6 +71,8 @@ github.com/chai2010/gettext-go v0.0.0-20160711120539-c6fed771bfd5/go.mod h1:/iP1
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/containerd/containerd v1.3.0-beta.2.0.20190823190603-4a2f61c4f2b4 h1:aMyA5J7j6D07U7pf8BFEY67BKoDcz0zWleAbQj3zVng=
 github.com/containerd/containerd v1.3.0-beta.2.0.20190823190603-4a2f61c4f2b4/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
+github.com/containerd/containerd v1.3.0 h1:xjvXQWABwS2uiv3TWgQt5Uth60Gu86LTGZXMJkjc7rY=
+github.com/containerd/containerd v1.3.0/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/containerd/continuity v0.0.0-20181203112020-004b46473808 h1:4BX8f882bXEDKfWIf0wa8HRvpnBoPszJJXL+TVbBw4M=
 github.com/containerd/continuity v0.0.0-20181203112020-004b46473808/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
 github.com/coreos/bbolt v1.3.1-coreos.6 h1:uTXKg9gY70s9jMAKdfljFQcuh4e/BXOM+V+d00KFj3A=