Pend the external-db-TLS BRATS

These tests have been invalid since their creation. From the beginning
they have passed certificate material in the director deployment
manifest, however the director itself has (always?) expected to be passed
_paths_ to the certificates.

Original tests here:
f97c556#diff-ab90421945d114536b0c024f3cbaee7f4566c79a592ba9d46b395f0771745b42R293-R306

and

Director config here:
https://github.com/cloudfoundry/bosh/blob/c095b06c91f14ef51b5a8bcea20c3ec3651590b8/src/bosh-director/lib/bosh/director/config.rb#L303-L318

src/brats/acceptance/external_db_tls_test.go

@@ -10,7 +10,7 @@ import (
 	"brats/utils"
 )
 
-var _ = Describe("Director external database TLS connections", func() {
+var _ = PDescribe("Director external database TLS connections", func() {
 	testDBConnectionOverTLS := func(databaseType string, mutualTLSEnabled bool, useIncorrectCA bool) {
 		tmpCertDir, err := os.MkdirTemp("", fmt.Sprintf("db_tls_%d", GinkgoParallelProcess()))
 		Expect(err).ToNot(HaveOccurred())