chore(packer): ability to add default packer options via spring config

[asher]

No description provided.

[matthack]

@asher I'm noticing that the options I'm passing to packer to use a specific template file and environment variables via the bake stage are getting ignored now. Not sure if this is a problem unique to me.

Log entry where it doesn't used the cws-ebs.json template I specified.

2019-05-20 20:25:11.772 INFO 1394 --- [tionScheduler-1] c.n.s.rosco.jobs.local.JobExecutorLocal : Executing cbb521d6-725c-4b25-8be9-4a8858e91076 with tokenized command: [packer, build, -color=false, -var, aws_region=us-west-2, -var, aws_instance_type=t2.micro, -var, aws_source_ami=ami-b9ff39d9, -var, aws_target_ami=apache2-all-20190520202508-xenial, -var, aws_ssh_username=ubuntu, -var, package_type=deb, -var, packages=apache2, -var, configDir=/opt/rosco/config/packer, /opt/rosco/config/packer/aws-ebs.json] (executionId: 01DBBEPN7BA0M42PT4FXTCHBJA:01DBBEPNFG5WEHER1NNJ0B3MNW:1:25c13fa1-d5c9-4b04-95d1-f4485c8418c5)

Bakery log ignoring the subnet:

==> amazon-ebs: Prevalidating AMI Name: apache2-all-20190520202508-xenial
amazon-ebs: Found Image ID: ami-b9ff39d9
==> amazon-ebs: Describing the subnet: subnet-1ef6087a returned error: InvalidSubnetID.NotFound: The subnet ID 'subnet-1ef6087a' does not exist
==> amazon-ebs: status code: 400, request id: 2f9d2a4d-4db8-4cca-b179-940439c70b97.
Build 'amazon-ebs' errored: Describing the subnet: subnet-1ef6087a returned error: InvalidSubnetID.NotFound: The subnet ID 'subnet-1ef6087a' does not exist
status code: 400, request id: 2f9d2a4d-4db8-4cca-b179-940439c70b97.

==> Some builds didn't complete successfully and had errors:
--> amazon-ebs: Describing the subnet: subnet-1ef6087a returned error: InvalidSubnetID.NotFound: The subnet ID 'subnet-1ef6087a' does not exist
status code: 400, request id: 2f9d2a4d-4db8-4cca-b179-940439c70b97.

==> Builds finished but no artifacts were created.

[asher]

@matthack This is due to a serialization regression in Orca. A fix was committed earlier today here: spinnaker/orca#2927

[matthack]

Good to know. Rosco/orca are working as expected after upgrading orca. Thanks!