TT#5444 Ensure ca-certificates is available for TLS support

Otherwise it will fail with:

| 11:04:48 grml-chroot /mnt /bin/bash
| Writing /etc/debian_chroot ...
| --2016-11-09 12:04:48--  https://deb.sipwise.com/autobuild/pool/main/n/ngcp-installer//ngcp-installer-ce_5.0.0.0+0~mr5.0.0.0+0~20161108225948.69+jessie~1.gbp52d5a0_all.deb
| Resolving deb.sipwise.com (deb.sipwise.com)... 92.42.136.158, 2a02:1b8:7:2::c0f:faa
| Connecting to deb.sipwise.com (deb.sipwise.com)|92.42.136.158|:443... connected.
| ERROR: The certificate of 'deb.sipwise.com' is not trusted.
| ERROR: The certificate of 'deb.sipwise.com' hasn't got a known issuer.
| dpkg: error: cannot access archive 'ngcp-installer-ce_5.0.0.0+0~mr5.0.0.0+0~20161108225948.69+jessie~1.gbp52d5a0_all.deb': No such file or directory

Change-Id: Icc08e07fafa4405aeb3896ac73e30b6f5873361d

deployment.sh

@@ -1211,6 +1211,9 @@ vlan
 # MT#13637 support https in sources.list
 apt-transport-https
 
+# TT#5444 ca-certificates is necessary to wget ngcp-installer over https
+ca-certificates
+
 # packages d-i installs but we ignore/skip:
 #discover
 #gettext-base