Update tracking events when marketplace plugin is installed

Description

As per discussion https://github.com/mattermost/mattermost-redux/pull/938#discussion_r331580496 need to update ui tracking event when a marketplace plugin is installed

QA Test Steps

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Status

Mana

2

Assignee

Ali Farooq

QA Assignee

None

Reporter

Ali Farooq

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Fix versions

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Mattermost Team

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