Fixing a lot of string formatting issues with regards to:

* Improper format specifier (e.g. %s for bools or %s for ints)
  * More or less parameters than format specifiers
  * Not calling a formatting function when it should have (e.g. Error() instead of Errorf())

pkg/auth/authorizer/abac/abac_test.go

@@ -340,7 +340,7 @@ func TestPolicy(t *testing.T) {
 	for _, test := range tests {
 		matches := test.policy.matches(test.attr)
 		if test.matches != matches {
-			t.Errorf("unexpected value for %s, expected: %s, saw: %s", test.name, test.matches, matches)
+			t.Errorf("unexpected value for %s, expected: %t, saw: %t", test.name, test.matches, matches)
 		}
 	}
 }