Elastic-blast

New features:
* A new config parameter `cloud-providers/gke-version` to select Google Kubernetes Engine version, defaults to 1.21

Improvements:
* GCP project config parameter is now optional. If missing elastic-blast will use `CLOUDSDK_CORE_PROJECT` environment variable or the default GCP project set in `gcloud` config.
* GCP zone config parameter now defaults to `us-east4-b`
* Improved error message when persistent disk size exceeds user’s quota

Bug fixes:
* Fixed a persistent disk problem in GCP
* Invalid janitor schedule string does not cause resource leak and is properly reported

Improvements:
* `elastic-blast status` always reports BLAST errors
* BLAST+ updated to version 2.13.0

Improvements:
* `elastic-blast status` updated to report when ElasticBLAST is submitting jobs to the cloud

Bug fixes:
* Fix bug that leads to invalid GKE cluster names

Bug fixes:

* Fix bug that causes ElasticBLAST on AWS to fail to read from S3

Improvements:
* Improve support for multiple local SSDs on AWS
* Consistent tagging of AWS EC2 Launch Template
* Machine selection in AWS is now stable

Bug fixes:
* User names with certain characters do not result in cloud provider errors any more