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, 51 insertions, 0 deletions

diff --git a/pkg/bindings/generate/types.go b/pkg/bindings/generate/types.go
index ce560c547..25c398c8b 100644
--- a/pkg/bindings/generate/types.go
+++ b/pkg/bindings/generate/types.go
@@ -32,4 +32,10 @@ type SystemdOptions struct {
 	PodPrefix *string
 	// Separator - systemd unit name separator between name/id and prefix
 	Separator *string
+	// 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
 }
diff --git a/pkg/bindings/generate/types_systemd_options.go b/pkg/bindings/generate/types_systemd_options.go
index 960e45e50..4d436945b 100644
--- a/pkg/bindings/generate/types_systemd_options.go
+++ b/pkg/bindings/generate/types_systemd_options.go
@@ -181,3 +181,48 @@ func (o *SystemdOptions) GetSeparator() string {
 	}
 	return *o.Separator
 }
+
+// WithWants set field Wants to given value
+func (o *SystemdOptions) WithWants(value []string) *SystemdOptions {
+	o.Wants = &value
+	return o
+}
+
+// GetWants returns value of field Wants
+func (o *SystemdOptions) GetWants() []string {
+	if o.Wants == nil {
+		var z []string
+		return z
+	}
+	return *o.Wants
+}
+
+// WithAfter set field After to given value
+func (o *SystemdOptions) WithAfter(value []string) *SystemdOptions {
+	o.After = &value
+	return o
+}
+
+// GetAfter returns value of field After
+func (o *SystemdOptions) GetAfter() []string {
+	if o.After == nil {
+		var z []string
+		return z
+	}
+	return *o.After
+}
+
+// WithRequires set field Requires to given value
+func (o *SystemdOptions) WithRequires(value []string) *SystemdOptions {
+	o.Requires = &value
+	return o
+}
+
+// GetRequires returns value of field Requires
+func (o *SystemdOptions) GetRequires() []string {
+	if o.Requires == nil {
+		var z []string
+		return z
+	}
+	return *o.Requires
+}