Signed-off-by: Julien DOCHE <julien.doche@gmail.com>

During e.g. cross-compiling, it is sometimes useful to be able to have
another binary than the default one as the compiler. This patch for the
build scripts lets "go" be the default value for the variable GO, and
the latter is then used as the go compiler.

Change-Id: I0adf7a661b26593d9b0ea902a61b631b80e76ae7
Signed-off-by: Joakim Roubert <joakimr@axis.com>

With this patch the dapper build will also work in environments behind
proxies.

Change-Id: I6d9c03d03d2e254043720fc7e77822826e4f38c8
Signed-off-by: Joakim Roubert <joakimr@axis.com>

Dockerfile.dapper: Use = instead of == for portability

Fix inconsistent shell script comparison operator ==

Use contemporary $() instead of legacy `` in shell commands

Fix markdown files according to markdownlint recommendations

feat: add NoSchedule toleration on key node-role.kubernetes.io/master

Fix error when get version using Wget

use mirrored images for traefik and coredns

GitHub now returns lowercase:

wget -SqO /dev/null https://github.com/rancher/k3s/releases/latest |& grep -i location

  location: https://github.com/rancher/k3s/releases/tag/v1.17.3+k3s1

Bump cri to 1.3.0-k3s.5

Add airgap image list to release artifacts

Update RPM systemd services for easy modification.

Modified installer produces a k3s-server and k3s-agent systemd
service, with env files located in /etc/rancher/k3s.

The k3s-server service may be started without modification but
k3s-agent requires a token and url modification to the
/etc/rancher/k3s/k3s-agent.env file for functionality.

The k3s-server service will conflict with the k3s-agent service,
so both may not be started at the same time.

Creates ./package/rpm/ repo dir for rpm specific resources and
relocates k3s.spec.

Use curl to send dispatch event to k3s-upgrade repo

Update k8s to v1.17.4-k3s1