ensure permissions to comply with ones from postinstall script

(cherry picked from commit 12c4203063abc89b969b1d157ea8090d87627e1a)

Conflicts:
	cfe_internal/CFE_knowledge.cf
Last byte of file should be newline, not close-curly-brace

(cherry picked from commit 7477bb4e171a7711e033df9396e4d3b74211bcf1)

Conflicts:
	cfe_internal/CFE_knowledge.cf
add dc-scripts to exclude_dirs()
(cherry picked from commit 5f90b801dadd1d470209b875b0b12ad77002a557)