* CLI command `pkg getsrc` returns deploy archive
```
Fix CLI command to return source archive instead of deploy archive.
If source archive is not available then return deploy archive.
```
* Add e2e tests for `fission package` CLI commands
* Cleanup environments created for pkg test
* Fix unit test failures
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Signed-off-by: Md Soharab Ansari <soharab.ansari@infracloud.io>