Standardise subscription logging

[jemrobinson]

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:vertical_traffic_light: Depends on

:arrow_heading_up: Summary

Replace:

SRE will be deployed to subscription 'My SRE Subscription' ('1e4924cb-a6ae-4193-a847-62f762c6295e')
SRE will be registered in SHM 'myshm.tre.com'
SHM subscription 'dab6dd05-b468-43f2-b629-f669f19714ba'

with

SRE will be deployed to subscription 'My SRE Subscription' (1e4924cb-a6ae-4193-a847-62f762c6295e)
SRE will be registered in SHM 'myshm.tre.com'
SHM is deployed to subscription 'My SHM Subscription' (dab6dd05-b468-43f2-b629-f669f19714ba)

which matches how we log subscriptions elsewhere.

:closed_umbrella: Related issues

:microscope: Tests

[github-actions[bot]]

Coverage report

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File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
data_safe_haven/commands
sre.py
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