Restore the deployment if it is deleted 🧗‍♂️

[houshengbo]

Changes

Fixes: #30

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[tekton-robot]

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[houshengbo]

/test pull-tekton-operator-integration-tests

[houshengbo]

/test pull-tekton-operator-integration-tests

[houshengbo]

/test pull-tekton-operator-integration-tests

[houshengbo]

/test pull-tekton-operator-integration-tests

[tekton-robot]

@houshengbo: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
pull-tekton-operator-build-tests	9f86e34	link	/test pull-tekton-operator-build-tests
pull-tekton-operator-integration-tests	9f86e34	link	/test pull-tekton-operator-integration-tests

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