TT#38454 Add 'ca-certificates' as dependency to ngcp-nth-*

In the past deployment.sh installed it during debootstrap.
We need to ensure it is installed on every NGCP system,
so adding it here.

Change-Id: Ic61a3d6af5f727ebf8f95c5fd5fb1d27c5951dca

debian/control

@@ -165,6 +165,7 @@ Depends:
  bind9-host | host,
  bootlogd,
  bridge-utils,
+ ca-certificates,
  debian-goodies,
  dstat,
  etckeeper,
@@ -215,6 +216,7 @@ Depends:
  bind9-host | host,
  bootlogd,
  bridge-utils,
+ ca-certificates,
  debian-goodies,
  dstat,
  etckeeper,