Track Sentry Exceptions For Helm Installation Errors

The following discussions from !22964 (merged) should be addressed:

• @ayufan started a discussion:

  Can we use: Gitlab::Sentry.track_exception(e)?

• @ayufan started a discussion:

  Can we use: Gitlab::Sentry.track_exception(e)?

• @ayufan started a discussion:

  Can we use: Gitlab::Sentry.track_exception(e)?

Also see discussions https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/22964#note_116852815

Basically we need to figure out if Sentry can be modified to work the way we need. It should not re-raise exception in development as this does not match our expected behaviour for our use case. See Kamil's suggestion about a minor change to fix that https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/22964#note_116853823