test update with updated rlen calculation in htslib

Author: vasudeva8

test/norm.rmdup.3.1.out

@@ -3,7 +3,7 @@
 ##INFO=<ID=SVLEN,Number=.,Type=Integer,Description="Difference in length between REF and ALT alleles">
 ##contig=<ID=1>
 #CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO
-1	1	.	A	<DEL>	.	.	SVLEN=-1000
-1	1	.	A	<DEL>	.	.	SVLEN=-2000
-1	1	.	A	<DEL>	.	.	SVLEN=-3000
+1	8	.	T	<DEL>	.	.	SVLEN=-10
+1	8	.	T	<DEL>	.	.	SVLEN=-11
+1	8	.	T	<DEL>	.	.	SVLEN=-12
 1	18	.	AC	A	.	.	.

test/norm.rmdup.3.2.out

@@ -3,5 +3,5 @@
 ##INFO=<ID=SVLEN,Number=.,Type=Integer,Description="Difference in length between REF and ALT alleles">
 ##contig=<ID=1>
 #CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO
-1	1	.	A	<DEL>	.	.	SVLEN=-1000
+1	8	.	T	<DEL>	.	.	SVLEN=-10
 1	18	.	AC	A	.	.	.

test/norm.rmdup.3.vcf

@@ -2,14 +2,14 @@
 ##INFO=<ID=SVLEN,Number=.,Type=Integer,Description="Difference in length between REF and ALT alleles">
 ##contig=<ID=1>
 #CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO
-1	10	.	C	<DEL>	.	.	SVLEN=-1000
-1	10	.	C	<DEL>	.	.	SVLEN=-1000
-1	10	.	C	<DEL>	.	.	SVLEN=-2000
-1	10	.	C	<DEL>	.	.	SVLEN=-1000
-1	10	.	C	<DEL>	.	.	SVLEN=-3000
-1	10	.	C	<DEL>	.	.	SVLEN=-2000
-1	10	.	C	<DEL>	.	.	SVLEN=-1000
-1	10	.	C	<DEL>	.	.	SVLEN=-3000
-1	10	.	C	<DEL>	.	.	SVLEN=-2000
+1	10	.	C	<DEL>	.	.	SVLEN=-10
+1	10	.	C	<DEL>	.	.	SVLEN=-10
+1	10	.	C	<DEL>	.	.	SVLEN=-11
+1	10	.	C	<DEL>	.	.	SVLEN=-10
+1	10	.	C	<DEL>	.	.	SVLEN=-12
+1	10	.	C	<DEL>	.	.	SVLEN=-11
+1	10	.	C	<DEL>	.	.	SVLEN=-10
+1	10	.	C	<DEL>	.	.	SVLEN=-12
+1	10	.	C	<DEL>	.	.	SVLEN=-11
 1	20	.	CCC	CC	.	.	.
 1	20	.	CC	C	.	.	.