Update c/common to an unreleased version

... to get https://github.com/containers/common/pull/1106 .

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

vendor/github.com/onsi/gomega/matchers.go

@@ -3,6 +3,7 @@ package gomega
 import (
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/onsi/gomega/matchers"
 	"github.com/onsi/gomega/types"
 )
@@ -26,6 +27,15 @@ func BeEquivalentTo(expected interface{}) types.GomegaMatcher {
 	}
 }
 
+//BeComparableTo uses gocmp.Equal to compare. You can pass cmp.Option as options.
+//It is an error for actual and expected to be nil.  Use BeNil() instead.
+func BeComparableTo(expected interface{}, opts ...cmp.Option) types.GomegaMatcher {
+	return &matchers.BeComparableToMatcher{
+		Expected: expected,
+		Options:  opts,
+	}
+}
+
 //BeIdenticalTo uses the == operator to compare actual with expected.
 //BeIdenticalTo is strict about types when performing comparisons.
 //It is an error for both actual and expected to be nil.  Use BeNil() instead.
@@ -394,6 +404,19 @@ func HaveField(field string, expected interface{}) types.GomegaMatcher {
 	}
 }
 
+// HaveExistingField succeeds if actual is a struct and the specified field
+// exists.
+//
+// HaveExistingField can be combined with HaveField in order to cover use cases
+// with optional fields. HaveField alone would trigger an error in such situations.
+//
+//     Expect(MrHarmless).NotTo(And(HaveExistingField("Title"), HaveField("Title", "Supervillain")))
+func HaveExistingField(field string) types.GomegaMatcher {
+	return &matchers.HaveExistingFieldMatcher{
+		Field: field,
+	}
+}
+
 // HaveValue applies the given matcher to the value of actual, optionally and
 // repeatedly dereferencing pointers or taking the concrete value of interfaces.
 // Thus, the matcher will always be applied to non-pointer and non-interface