set two genes to have source vega for testing

modules/t/test-genome-DBs/homo_sapiens/core/gene.txt

 18256	protein_coding	1282	469283	30274334	30300924	1	152202	ensembl	KNOWN	DJ310O13.1.2 (NOVEL PROTEIN SIMILAR DROSOPHILA PROTEIN CG7474, ISOFORM 2 ) (FRAGMENT). [Source:SPTREMBL;Acc:Q9BR18]	1
 18257	protein_coding	1282	469283	30301733	30318881	1	0	ensembl	NOVEL	\N	1
-18258	protein_coding	1282	469283	30320853	30327869	-1	40090	ensembl	KNOWN	\N	1
+18258	protein_coding	1282	469283	30320853	30327869	-1	40090	vega	KNOWN	\N	1
 18259	protein_coding	1282	469283	30371004	30372906	1	102413	ensembl	KNOWN	DJ310O13.4 (NOVEL PROTEIN SIMILAR TO PREDICTED C. ELEGANS AND C. INTESTINALIS PROTEINS) (FRAGMENT). [Source:SPTREMBL;Acc:Q9NUG5]	1
-18260	protein_coding	1282	469283	30386305	30408041	1	34986	ensembl	KNOWN	\N	1
+18260	protein_coding	1282	469283	30386305	30408041	1	34986	vega	KNOWN	\N	1
 18261	protein_coding	1282	469283	30428114	30477716	1	158525	ensembl	KNOWN	TYROSINE-PROTEIN KINASE HCK (EC 2.7.1.112) (P59-HCK AND P60-HCK) (HEMOPOIETIC CELL KINASE). [Source:SWISSPROT;Acc:P08631]	1
 18262	protein_coding	1282	469283	30485596	30543114	1	120576	ensembl	KNOWN	TRANSMEMBRANE 9 SUPERFAMILY PROTEIN MEMBER 4. [Source:SWISSPROT;Acc:Q92544]	1
 18263	protein_coding	1282	469283	30565065	30566129	-1	128607	ensembl	KNOWN	BA392M18.1 (NOVEL PROTEIN SIMILAR TO TESTIS SPECIFIC PROTEIN TSPY). [Source:SPTREMBL;Acc:Q9H489]	1