Add team property to all modules.

This allows vendors (like google) to specify which team owns the test
module and code.

Team is a commonProperty on modules and points to the designate "team"
module.  The DepsMutator adds the dependency on the "team" module and
"GenerateBuildActions" write the team data to intermediate files.

A new singleton rule, all_teams visits all modules and writes out
the proto containing the team for each module.
If a module doesn't have a team, then it finds the package in the
blueprint file and parent directory blueprint files that have a
default_team and uses that team.

Test: m all_teams
Test: go test ./python ./java ./cc ./rust ./android
Test: added team to HelloWorldHostTest and built the new asciiproto target
Test: added package default_team and checkout output proto.
Change-Id: I5c07bf489de460a04fc540f5fff0394f39f574a7

android/module.go

@@ -519,6 +519,9 @@ type commonProperties struct {
 	// trace, but influence modules among products.
 	SoongConfigTrace     soongConfigTrace `blueprint:"mutated"`
 	SoongConfigTraceHash string           `blueprint:"mutated"`
+
+	// The team (defined by the owner/vendor) who owns the property.
+	Team *string `android:"path"`
 }
 
 type distProperties struct {
@@ -531,6 +534,12 @@ type distProperties struct {
 	Dists []Dist `android:"arch_variant"`
 }
 
+type TeamDepTagType struct {
+	blueprint.BaseDependencyTag
+}
+
+var teamDepTag = TeamDepTagType{}
+
 // CommonTestOptions represents the common `test_options` properties in
 // Android.bp.
 type CommonTestOptions struct {
@@ -992,6 +1001,12 @@ func (m *ModuleBase) ComponentDepsMutator(BottomUpMutatorContext) {}
 
 func (m *ModuleBase) DepsMutator(BottomUpMutatorContext) {}
 
+func (m *ModuleBase) baseDepsMutator(ctx BottomUpMutatorContext) {
+	if m.Team() != "" {
+		ctx.AddDependency(ctx.Module(), teamDepTag, m.Team())
+	}
+}
+
 // AddProperties "registers" the provided props
 // each value in props MUST be a pointer to a struct
 func (m *ModuleBase) AddProperties(props ...interface{}) {
@@ -1437,6 +1452,10 @@ func (m *ModuleBase) Owner() string {
 	return String(m.commonProperties.Owner)
 }
 
+func (m *ModuleBase) Team() string {
+	return String(m.commonProperties.Team)
+}
+
 func (m *ModuleBase) setImageVariation(variant string) {
 	m.commonProperties.ImageVariation = variant
 }