Update base image to ubuntu:20.04 (#1839)

Author: ondrej-fabry

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: ['2106', '2101', '2009', '2005']
+        version: ['2106', '2101']
 
     steps:
       - name: "Checkout"
@@ -34,7 +34,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        version: ['2106', '2101', '2009', '2005']
+        version: ['2106', '2101']
 
     steps:
       - name: "Checkout"

docker/prod/Dockerfile

@@ -1,7 +1,7 @@
 ARG DEV_IMG=dev_vpp_agent
 FROM ${DEV_IMG} as devimg
 
-FROM ubuntu:18.04 as base
+FROM ubuntu:20.04 as base
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
 		# general tools
@@ -12,8 +12,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 		ca-certificates \
 		libapr1 \
 		libc6 \
-		libmbedcrypto1 \
-		libmbedtls10 \
 		libmbedx509-0 \
 		libnuma1 \
 		openssl \