Fix liquibase for MariaDB
<!-- 2474 - rename attestation_pkey to attestation_1_6_pkey -->
<changeSet author="kamransaleem"
- id="20170801-2474-1a">
+ id="20170801-2474-1a"
+ dbms="mssql">
<comment>2488 - rename attestation_pkey to attestation_1_6_pkey</comment>
<dropPrimaryKey constraintName="attestation_pkey"
