Added tests on TTL directive

src/zscanner/test/processing.c

src/zscanner/test/tests/01_owner.out

src/zscanner/test/tests/02_class.out

src/zscanner/test/tests/03_rrttl.out

src/zscanner/test/tests/05-0_TTL.in

src/zscanner/test/tests/05-0_TTL.out

src/zscanner/test/tests/05-1_TTL.in

src/zscanner/test/tests/05-1_TTL.out

src/zscanner/test/tests/05-2_TTL.in

src/zscanner/test/tests/05-2_TTL.out

src/zscanner/test/tests/05-3_TTL.in

src/zscanner/test/tests/05-3_TTL.out

src/zscanner/test/tests/05-4_TTL.in

src/zscanner/test/tests/05-4_TTL.out

src/zscanner/test/tests/05_TTL.in

src/zscanner/test/tests/10_A.out

src/zscanner/test/tests/11_AAAA.out

src/zscanner/test/tests/12_TXT.out

src/zscanner/test/tests/13_SPF.out

src/zscanner/test/tests/14_NS.out