Set package initial status if its empty (#1522)

If the user applies package YAML file has no status field,
the package won't be able to be compiled or deployed due
to lack of status. This PR aims to add a check at buildermgr
to set initial package status to those packages.

test/tests/test_kubectl/spec-yaml/env-go.yaml

@@ -0,0 +1,18 @@
+apiVersion: fission.io/v1
+kind: Environment
+metadata:
+  creationTimestamp: null
+  name: go-spec-kubectl
+  namespace: default
+spec:
+  builder:
+    command: build
+    image: fission/go-builder-1.12:1.7.1
+  imagepullsecret: ""
+  keeparchive: false
+  poolsize: 3
+  resources: {}
+  runtime:
+    image: fission/go-env-1.12:1.7.1
+  terminationGracePeriod: 5
+  version: 2