Test packages on Linux (#13921)

* test important packages on Linux

* enable chronos

azure-pipelines.yml

@@ -30,8 +30,8 @@ jobs:
       Windows_amd64:
         vmImage: 'windows-2019'
         CPU: amd64
-      Windows_amd64_pkg:
-        vmImage: 'windows-2019'
+      Linux_amd64_pkg:
+        vmImage: 'ubuntu-16.04'
         CPU: amd64
         NIM_TEST_PACKAGES: true
 

testament/important_packages.nim

@@ -17,8 +17,7 @@ pkg "c2nim", false, "nim c testsuite/tester.nim"
 pkg "cascade"
 pkg "chroma"
 pkg "chronicles", true, "nim c -o:chr -r chronicles.nim"
-# disable until my chronos fix was merged
-#pkg "chronos", true
+pkg "chronos", true
 pkg "cligen", false, "nim c -o:cligenn -r cligen.nim"
 pkg "coco", true
 pkg "combparser"