initscripts: Fix populate-volatile.sh bug when file/dir exists
The blocks which test for entry exitence (file or directory) use a
`A && B || C` syntax. This form is not behaving as a if-then-else block
even the code logic assumes that. C may run when A is true which breaks
the case where VERBOSE is 'no' but the file/directory exists.
Along with fixing these specific issues, this patch fixes the other
instances where blocks of form `A && B || C` are used as if-then-else.
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>