fix binpacking log to show proper node quantity and pods

[bwagner5]

1. Issue, if available:
N/A

2. Description of changes:

• The packing log that should tell how many nodes it packed to and how many pods it packed was incorrectly logging a single node packing even when node quantity was > 1.

Example bad log:

2021-11-09T17:48:28.330Z	INFO	controller.allocation.provisioner/default	Computed packing for 127 pod(s) with instance type option(s) [c6i.32xlarge m6i.32xlarge]	{"commit": "82226ca"}
2021-11-09T17:48:28.542Z	INFO	controller.allocation.provisioner/default	Computed packing for 71 pod(s) with instance type option(s) [c5.18xlarge c5d.18xlarge c5n.18xlarge c6i.24xlarge c5d.24xlarge c5a.24xlarge c5.24xlarge c5ad.24xlarge c6i.32xlarge m5d.24xlarge m6i.24xlarge m5.24xlarge m5a.24xlarge m5ad.24xlarge m5dn.24xlarge m5n.24xlarge m6i.32xlarge r5ad.24xlarge r5b.24xlarge r5a.24xlarge]	{"commit": "82226ca"}
2021-11-09T17:48:31.692Z	INFO	controller.allocation.provisioner/default	Launched instance: i-0f8265d219c280e4d, hostname: ip-10-0-238-146.us-east-2.compute.internal, type: c6i.32xlarge, zone: us-east-2c, capacityType: on-demand	{"commit": "82226ca"}
2021-11-09T17:48:31.692Z	INFO	controller.allocation.provisioner/default	Launched instance: i-04fde67af0c30f65a, hostname: ip-10-0-211-218.us-east-2.compute.internal, type: c6i.32xlarge, zone: us-east-2c, capacityType: on-demand	{"commit": "82226ca"}
2021-11-09T17:48:31.692Z	INFO	controller.allocation.provisioner/default	Launched instance: i-0a59c9e463c985d7a, hostname: ip-10-0-201-31.us-east-2.compute.internal, type: c6i.32xlarge, zone: us-east-2c, capacityType: on-demand	{"commit": "82226ca"}
2021-11-09T17:48:31.692Z	INFO	controller.allocation.provisioner/default	Launched instance: i-0c7acd653104b0566, hostname: ip-10-0-249-63.us-east-2.compute.internal, type: c6i.32xlarge, zone: us-east-2c, capacityType: on-demand	{"commit": "82226ca"}
2021-11-09T17:48:31.692Z	INFO	controller.allocation.provisioner/default	Launched instance: i-0da0793d3902502a2, hostname: ip-10-0-229-44.us-east-2.compute.internal, type: c6i.32xlarge, zone: us-east-2c, capacityType: on-demand	{"commit": "82226ca"}
2021-11-09T17:48:31.692Z	INFO	controller.allocation.provisioner/default	Launched instance: i-0933578060fb13476, hostname: ip-10-0-247-173.us-east-2.compute.internal, type: c6i.32xlarge, zone: us-east-2c, capacityType: on-demand	{"commit": "82226ca"}

Example Fixed Log:

karpenter-controller-65567bbc4d-mxwk2 manager 2021-11-19T21:20:20.915Z	INFO	controller.provisioning	Computed packing of 15 nodes for 1905 pod(s) with instance type option(s) [c6i.32xlarge m6i.32xlarge]	{"commit": "b4a52e2", "provisioner": "default"}
karpenter-controller-65567bbc4d-mxwk2 manager 2021-11-19T21:20:20.915Z	INFO	controller.provisioning	Computed packing of 1 nodes for 95 pod(s) with instance type option(s) [c6i.24xlarge c5a.24xlarge c5ad.24xlarge c5d.24xlarge c5.24xlarge c6i.32xlarge m5.24xlarge m5d.24xlarge m5a.24xlarge m5dn.24xlarge m5n.24xlarge m5ad.24xlarge m6i.24xlarge m6i.32xlarge r5n.24xlarge r5b.24xlarge r5.24xlarge r5ad.24xlarge r5a.24xlarge r5d.24xlarge]	{"commit": "b4a52e2", "provisioner": "default"}

3. Does this change impact docs?

• Yes, PR includes docs updates
• Yes, issue opened: link to issue
• No

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

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[ellistarn]

One minor. Nice fix!