Application Bundle unable to find datasource driver class when deployed on JBoss Fuse

Issue

• How to import datasource driver class in a bundle.
• I am attempting to modify this existing project on github to use postgresql driver and postgresql database. The datasource bundle contains the postgresql datasource. The routing bundle contains routes that references the datasource. Instead of deploying as a feature, i am deploying them individually as osgi bundles to troubleshoot the exception.
• Please advise why the exception is being thrown or how to resolve or troubleshoot this issue. I have used the postgresql version that is listed under the supported configuration.
• Not able to deploy a bundle on JBoss Fuse server. I am getting the below :-

Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class 'org.postgresql.Driver'
    at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1429)[273:org.apache.commons.dbcp:1.4]
    at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)[273:org.apache.commons.dbcp:1.4]
    at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)[273:org.apache.commons.dbcp:1.4]
    at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)[258:org.apache.servicemix.bundles.spring-jdbc:3.2.9.RELEASE_1]
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)[258:org.apache.servicemix.bundles.spring-jdbc:3.2.9.RELEASE_1]
    ... 25 more
Caused by: java.lang.ClassNotFoundException: org.postgresql.Driver from bundle 291 (sample)
    at org.apache.camel.core.osgi.utils.BundleDelegatingClassLoader.loadClass(BundleDelegatingClassLoader.java:78)[151:org.apache.camel.camel-blueprint:2.12.0.redhat-611412]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)[:1.7.0_75]
    at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1420)[273:org.apache.commons.dbcp:1.4]
    ... 29 more

• Unable to load JDBC driver class, getting below exception.

org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot load JDBC driver class 'com.microsoft.sqlserver.jdbc.SQLServerDriver'

  at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-jdbc:3.2.12.RELEASE_2]
  at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:575)[org.apache.servicemix.bundles:org.apache.servicemix.bundles.spring-jdbc:3.2.12.RELEASE_2]

• The following optional imports were not satisfied:-

javax.xml.bind.annotation 
org.apache.activemq.camel.component 
org.apache.camel 
org.apache.camel.component.sql 
org.apache.camel.util 
org.apache.commons.dbcp 
org.osgi.service.blueprint