debian: Install missing ca-certificates package

Because CI build is

1.  Slow and in log it is showing because "apt-utils" not installed

2. to avoid CI build to exits with error without having certificate

Fixes: #427 

Signed-off-by: Pratik Raj <rajpratik71@gmail.com>

rootfs-builder/debian/Dockerfile.in

@@ -8,10 +8,12 @@ from docker.io/debian:@OS_VERSION@
 
 # RUN commands
 RUN apt-get update && apt-get --no-install-recommends install -y \
+    apt-utils \
     autoconf \
     automake \
     binutils \
     build-essential \
+    ca-certificates \
     chrony \
     cmake \
     coreutils \

rootfs-builder/ubuntu/Dockerfile.in

@@ -12,10 +12,12 @@ from docker.io/ubuntu:@OS_VERSION@
 
 # RUN commands
 RUN apt-get update && apt-get --no-install-recommends install -y \
+    apt-utils \
     autoconf \
     automake \
     binutils \
     build-essential \
+    ca-certificates \
     chrony \
     cmake \
     coreutils \