Change tag key to "Vault" to reference Vault UUID as in other API usages.

Author: dkocher

hub/src/main/java/cloud/katta/protocols/s3/STSChainedAssumeRoleRequestInterceptor.java

@@ -56,7 +56,7 @@ public TemporaryAccessTokens assumeRoleWithWebIdentity(final Credentials credent
             // Assume role with previously obtained temporary access token
             return super.assumeRole(credentials.withTokens(tokens)
                     .withProperty(Profile.STS_ROLE_ARN_PROPERTY_KEY, settings.getProperty(S3AssumeRoleProtocol.S3_ASSUMEROLE_ROLEARN_TAG))
-                    .withProperty(Profile.STS_TAGS_PROPERTY_KEY, String.format("%s=%s", "VaultRequested", settings.getProperty(S3AssumeRoleProtocol.OAUTH_TOKENEXCHANGE_VAULT)))
+                    .withProperty(Profile.STS_TAGS_PROPERTY_KEY, String.format("%s=%s", "Vault", settings.getProperty(S3AssumeRoleProtocol.OAUTH_TOKENEXCHANGE_VAULT)))
             );
         }
         return tokens;