driver fails to initialize when running as a bundle in an OSGi environment

Bug Description
在正常的Java程序中使用taos的JDBC驱动没有问题。
但是在OSGI环境下，以Bundle形式运行的程序中，taos的JDBC驱动在类加载的过程中失败。

原因分析：
在AbstractDatabaseMetaData初始化过程中，要读取jar包根目录下的taos-jdbc-version.properties文件，
在OSGI环境下调试变量值如下，导致if分支无法进入：

最终报错：

请看看是否可以调整读取配置文件的方式，可以同时支持OSGI Bundle运行场景。

JDBC驱动：
com.taosdata.jdbc
taos-jdbcdriver
3.2.9

TDengine版本：3.2.3.0

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Type in '....'
3. See error

Expected Behavior
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Screenshots
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Environment (please complete the following information):

• OS: [e.g. CentOS 7.0]
• Memory, CPU, current Disk Space
• TDengine Version [3.2.3.0]

Additional Context
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Start by inspecting AbstractDatabaseMetaData initialization and how it reads taos-jdbc-version.properties from the JAR root. Reproduce the JDBC driver startup in an OSGi Bundle using the reported taos-jdbcdriver 3.2.9 and TDengine 3.2.3.0 environment. Done means the driver initializes successfully in OSGi while continuing to work in a normal Java program.