fix GMC crashes in e2e

[KfreeZ]

Description

fix for #394

Root cause analysis:

this issue is introduced by #383 , in this PR, I moved the deployment filters, but missed the

		CreateFunc: func(e event.CreateEvent) bool {
			return false
		}, DeleteFunc: func(e event.DeleteEvent) bool {
			return false
		},

without these two, the creation/deletion of the deployment triggers the reconcile,

the sequence to hit this issue is like: delete GMC pipeline -> trigger deployment deletion ->trigger graph status update, but graph is already deleted ->panic.

solution：

• restore the create/delete filters
• add protection code

Issues

#394

Type of change

List the type of change like below. Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would break existing design and interface)

Dependencies

n/a

Tests

CI/CD cover the tests

[mkbhanda]

LGTM -- thank you for the detailed root cause analysis @KfreeZ