Handlers for `generate systemd` with custom dependencies

This commit includes:
* Handlers for generate systemd unit
  with manually defined dependencies such as:
  Wants=, After= and Requires=

* The new unit and e2e tests for checking generated systemd units
  for container and pod with custom dependencies

* Documented descriptions for custom dependencies options

Signed-off-by: Eugene (Evgenii) Shubin <esendjer@gmail.com>

2 files changed, 17 insertions, 1 deletions

diff --git a/pkg/domain/entities/generate.go b/pkg/domain/entities/generate.go
index e431a70af..73dd64ecd 100644
--- a/pkg/domain/entities/generate.go
+++ b/pkg/domain/entities/generate.go
@@ -26,6 +26,12 @@ type GenerateSystemdOptions struct {
 	NoHeader bool
 	// TemplateUnitFile - make use of %i and %I to differentiate between the different instances of the unit
 	TemplateUnitFile bool
+	// Wants - systemd wants list for the container or pods
+	Wants []string
+	// After - systemd after list for the container or pods
+	After []string
+	// Requires - systemd requires list for the container or pods
+	Requires []string
 }
 
 // GenerateSystemdReport
diff --git a/pkg/domain/infra/tunnel/generate.go b/pkg/domain/infra/tunnel/generate.go
index 49b66e908..235d478ec 100644
--- a/pkg/domain/infra/tunnel/generate.go
+++ b/pkg/domain/infra/tunnel/generate.go
@@ -8,7 +8,17 @@ import (
 )
 
 func (ic *ContainerEngine) GenerateSystemd(ctx context.Context, nameOrID string, opts entities.GenerateSystemdOptions) (*entities.GenerateSystemdReport, error) {
-	options := new(generate.SystemdOptions).WithUseName(opts.Name).WithContainerPrefix(opts.ContainerPrefix).WithNew(opts.New).WithNoHeader(opts.NoHeader).WithTemplateUnitFile(opts.TemplateUnitFile).WithPodPrefix(opts.PodPrefix).WithSeparator(opts.Separator)
+	options := new(
+		generate.SystemdOptions).
+		WithUseName(opts.Name).
+		WithContainerPrefix(opts.ContainerPrefix).
+		WithNew(opts.New).WithNoHeader(opts.NoHeader).
+		WithTemplateUnitFile(opts.TemplateUnitFile).
+		WithPodPrefix(opts.PodPrefix).
+		WithSeparator(opts.Separator).
+		WithWants(opts.Wants).
+		WithAfter(opts.After).
+		WithRequires(opts.Requires)
 
 	if opts.StartTimeout != nil {
 		options.WithStartTimeout(*opts.StartTimeout)