Since Change-Id Ia2882b7ca31a3219c676986e85045fa08a425d7a, osmo-bsc
uses osmo-mgw and utilizes libosmo-mgcp-client to talk to it.
This commit fixes latest constant failures in voice suite.
Change-Id: I1dadd781a357fce33e7bde55e4bcbdaeb4633359
... instead of using the one from from osmo vty directly.
This way we avoid having multiple word attribute value and we can skip
using quotes in the conf files.
Change-Id: I5265cc9990dd5e99dba1f6262b3a8c597a3e958d