Use qualified name of global capability in error message

In project.config that capability ID is prefixes with "<plugin-name>~".
To avoid confusion include the prefix into the error message.

Change-Id: I8ae4b030f7ce3d94d3435af5216fc8615e6d2786
Signed-off-by: Edwin Kempin <ekempin@google.com>

java/com/google/gerrit/plugins/codeowners/validation/SkipCodeOwnerConfigValidationPushOption.java

diff --git a/java/com/google/gerrit/plugins/codeowners/validation/SkipCodeOwnerConfigValidationPushOption.java b/java/com/google/gerrit/plugins/codeowners/validation/SkipCodeOwnerConfigValidationPushOption.java
index 4417295..2443ef5 100644
--- a/java/com/google/gerrit/plugins/codeowners/validation/SkipCodeOwnerConfigValidationPushOption.java
+++ b/java/com/google/gerrit/plugins/codeowners/validation/SkipCodeOwnerConfigValidationPushOption.java
@@ -106,7 +106,8 @@
     } catch (PermissionBackendException e) {
       throw newInternalServerError(
           String.format(
-              "Failed to check %s capability", SkipCodeOwnerConfigValidationCapability.ID),
+              "Failed to check %s~%s capability",
+              pluginName, SkipCodeOwnerConfigValidationCapability.ID),
           e);
     }
   }