Improve deployment performance when there are many components.

[zagy]

Improves the performance of Component.__init__ which is called very often.

@elikoga I'm not sure if this is tested enough. No tests break, so I would assume the functionality is the same, but please have a look.

[elikoga]

This code path is tested in

batou/src/batou/tests/test_environment.py

Lines 337 to 344 in 1109021

	def test_unused_components_get_reported(sample_service, output):
	e = Environment("test-unused")
	e.load()
	output.backend.output = ""
	e.configure()
	assert "'Unused': BadUnused" in output.backend.output

although the assertion only asserts a small part of the output breadcrumbs

[zagy]

This code path is tested in

batou/src/batou/tests/test_environment.py

Lines 337 to 344 in 1109021

	def test_unused_components_get_reported(sample_service, output):
	e = Environment("test-unused")
	e.load()
	output.backend.output = ""
	e.configure()
	assert "'Unused': BadUnused" in output.backend.output

although the assertion only asserts a small part of the output breadcrumbs

Okay, I verified that this test breaks if I remove the updated code :)

[ctheune]

Sounds good. Initially I was even thinking whether we could delay the computation of the init_breadcrumbs to a later point in time and just do the _getframe(2) call.