[Bug] Fix the SPI extension admin-api loading of storage-plugins

[Pil0tXia]

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• I had searched in the issues and found no similar issues.

Environment

Windows

EventMesh version

master

What happened

storage-plugins didn't realize org.apache.eventmesh.api.admin.Admin and caused boot failure.

It is a quick fix, including:

• mongodb
• knative
• pravega
• pulsar

not including:

• redis (assigned to @fabian4 )
• kafka (full admin functions WIP)

How to reproduce

1. SPI loading fail:

2. circular dependency:

3. NPE:

Progress

Fixing Pravega NPE ...

Fixed.

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

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