Create structs for helm to be shared by install and inject (#3161)

Signed-off-by: Alejandro Pedraza <alejandro@buoyant.io>

pkg/inject/template-values.go

@@ -0,0 +1,91 @@
+package inject
+
+type (
+	// Values contains the top-level elements in the Helm charts
+	Values struct {
+		Namespace        string
+		ClusterDomain    string
+		HighAvailability bool
+		Identity         *Identity
+
+		Proxy     *Proxy
+		ProxyInit *ProxyInit
+	}
+
+	// Proxy contains the fields to set the proxy sidecar container
+	Proxy struct {
+		Capabilities          *Capabilities
+		Component             string
+		DisableIdentity       bool
+		DisableTap            bool
+		EnableExternalProfile bool
+		Image                 *Image
+		LogLevel              string
+		SAMountPath           *SAMountPath
+		Ports                 *Ports
+		Resources             *Resources
+		UID                   int64
+	}
+
+	// ProxyInit contains the fields to set the proxy-init container
+	ProxyInit struct {
+		Capabilities        *Capabilities
+		IgnoreInboundPorts  string
+		IgnoreOutboundPorts string
+		Image               *Image
+		SAMountPath         *SAMountPath
+		Resources           *Resources
+	}
+
+	// DebugContainer contains the fields to set the debugging sidecar
+	DebugContainer struct {
+		Image *Image
+	}
+
+	// Image contains the details to define a container image
+	Image struct {
+		Name       string
+		PullPolicy string
+		Version    string
+	}
+
+	// Ports contains all the port-related setups
+	Ports struct {
+		Admin    int32
+		Control  int32
+		Inbound  int32
+		Outbound int32
+	}
+
+	// Constraints wraps the Limit and Request settings for computational resources
+	Constraints struct {
+		Limit   string
+		Request string
+	}
+
+	// Capabilities contains the SecurityContext capabilities to add/drop into the injected
+	// containers
+	Capabilities struct {
+		Add  []string
+		Drop []string
+	}
+
+	// SAMountPath contains the details for ServiceAccount volume mount
+	SAMountPath struct {
+		Name      string
+		MountPath string
+	}
+
+	// Resources represents the computational resources setup for a given container
+	Resources struct {
+		CPU    Constraints
+		Memory Constraints
+	}
+
+	// Identity contains the fields to set the identity variables in the proxy
+	// sidecar container
+	Identity struct {
+		TrustAnchorsPEM string
+		TrustDomain     string
+	}
+)