[Backport 7.68.x] fix(rpm): Stop the agent in legacy preinst

[BaptisteFoy]

Backport 6468c25 from #39190.

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What does this PR do?

#37078 removed the agent stop command from the RPM preinst to migrate it in the installer, while #37084 preserved some preinst commands in bash for upgrades from older agents. The combination of these two prevents us from stopping the agent before upgrading from an older version, leaving compiled Python files on disk after the upgrade that are not removed by an uninstallation of the agent.

Motivation

Describe how you validated your changes

Manual QA

Possible Drawbacks / Trade-offs

Additional Notes

[agent-platform-auto-pr]

Static quality checks

✅ Please find below the results from static quality gates
Comparison made with ancestor d9bfd7f

Successful checks

Info

	Quality gate	Delta	On disk size (MiB)	Delta	On wire size (MiB)
✅	agent_deb_amd64	$${+0.01}$$	$${696.42}$$ < $${752.99}$$	$${+0}$$	$${176.08}$$ < $${187.44}$$
✅	agent_deb_amd64_fips	$${+0.08}$$	$${694.72}$$ < $${751.36}$$	$${-0.02}$$	$${175.54}$$ < $${187.06}$$
✅	agent_heroku_amd64	$${-0}$$	$${358.71}$$ < $${369.68}$$	$${+0.01}$$	$${96.53}$$ < $${99.55}$$
✅	agent_msi	$${+0.01}$$	$${958.91}$$ < $${987.01}$$	$${-0.03}$$	$${146.29}$$ < $${150.72}$$
✅	agent_rpm_amd64	$${+0.01}$$	$${696.41}$$ < $${752.98}$$	$${+0.01}$$	$${177.62}$$ < $${190.03}$$
✅	agent_rpm_amd64_fips	$${+0.08}$$	$${694.71}$$ < $${751.35}$$	$${+0.04}$$	$${177.52}$$ < $${189.81}$$
✅	agent_rpm_arm64	$${+0.01}$$	$${686.43}$$ < $${739.42}$$	$${+0.01}$$	$${161.04}$$ < $${171.23}$$
✅	agent_rpm_arm64_fips	$${+0.07}$$	$${684.84}$$ < $${737.91}$$	$${+0.05}$$	$${160.2}$$ < $${170.22}$$
✅	agent_suse_amd64	$${+0.01}$$	$${696.41}$$ < $${752.98}$$	$${+0.01}$$	$${177.62}$$ < $${190.03}$$
✅	agent_suse_amd64_fips	$${+0.08}$$	$${694.71}$$ < $${751.35}$$	$${+0.04}$$	$${177.52}$$ < $${189.81}$$
✅	agent_suse_arm64	$${+0.01}$$	$${686.43}$$ < $${739.42}$$	$${+0.01}$$	$${161.04}$$ < $${171.23}$$
✅	agent_suse_arm64_fips	$${+0.07}$$	$${684.84}$$ < $${737.91}$$	$${+0.05}$$	$${160.2}$$ < $${170.22}$$
✅	docker_agent_amd64	$${+0.01}$$	$${780.22}$$ < $${849.39}$$	$${+0.02}$$	$${268.69}$$ < $${288.34}$$
✅	docker_agent_arm64	$${+0.08}$$	$${793.74}$$ < $${858.97}$$	$${+0.02}$$	$${256.06}$$ < $${274.36}$$
✅	docker_agent_jmx_amd64	$${+0.01}$$	$${971.42}$$ < $${1040.59}$$	$${+0.01}$$	$${337.66}$$ < $${357.3}$$
✅	docker_agent_jmx_arm64	$${+0.08}$$	$${973.54}$$ < $${1038.77}$$	$${+0.01}$$	$${321.02}$$ < $${339.32}$$
✅	docker_agent_windows1809	$${+0.01}$$	$${1487.08}$$ < $${1557.19}$$	$${+0.06}$$	$${488.06}$$ < $${507.33}$$
✅	docker_agent_windows1809_core	$${+0.01}$$	$${6217.04}$$ < $${6287.46}$$	$${0}$$	$${2048.0}$$ < $${2067.76}$$
✅	docker_agent_windows1809_core_jmx	$${-0.19}$$	$${6338.61}$$ < $${6409.04}$$	$${0}$$	$${2048.0}$$ < $${2067.76}$$
✅	docker_agent_windows1809_jmx	$${+0.01}$$	$${1608.71}$$ < $${1679.14}$$	$${-0.08}$$	$${530.29}$$ < $${550.27}$$
✅	docker_agent_windows2022	$${+0.14}$$	$${1506.31}$$ < $${1576.85}$$	$${+0.01}$$	$${500.75}$$ < $${520.76}$$
✅	docker_agent_windows2022_core	$${+0.04}$$	$${6190.13}$$ < $${6260.53}$$	$${0}$$	$${2048.0}$$ < $${2067.76}$$
✅	docker_agent_windows2022_core_jmx	$${+0}$$	$${6311.77}$$ < $${6382.17}$$	$${0}$$	$${2048.0}$$ < $${2067.76}$$
✅	docker_agent_windows2022_jmx	$${-0.17}$$	$${1627.79}$$ < $${1698.2}$$	$${-0}$$	$${543.02}$$ < $${562.99}$$
✅	docker_cluster_agent_amd64	$${+0.01}$$	$${212.85}$$ < $${259.73}$$	$${+0}$$	$${72.38}$$ < $${103.68}$$
✅	docker_cluster_agent_arm64	$${+0.07}$$	$${228.75}$$ < $${274.24}$$	$${+0.01}$$	$${68.65}$$ < $${98.45}$$
✅	docker_cws_instrumentation_amd64	$${-0}$$	$${7.08}$$ < $${7.12}$$	$${-0}$$	$${2.95}$$ < $${3.29}$$
✅	docker_cws_instrumentation_arm64	$${-0}$$	$${6.69}$$ < $${6.92}$$	$${+0}$$	$${2.7}$$ < $${3.07}$$
✅	docker_dogstatsd_amd64	$${-0.02}$$	$${39.2}$$ < $${39.57}$$	$${-0.01}$$	$${15.11}$$ < $${15.76}$$
✅	docker_dogstatsd_arm64	$${-0.02}$$	$${37.86}$$ < $${38.2}$$	$${-0.01}$$	$${14.52}$$ < $${14.83}$$
✅	dogstatsd_deb_amd64	$${+0}$$	$${30.45}$$ < $${31.52}$$	$${-0}$$	$${8.0}$$ < $${8.97}$$
✅	dogstatsd_deb_arm64	$${-0}$$	$${29.02}$$ < $${30.08}$$	$${-0}$$	$${6.94}$$ < $${7.92}$$
✅	dogstatsd_rpm_amd64	$${+0}$$	$${30.45}$$ < $${31.52}$$	$${+0}$$	$${8.01}$$ < $${8.98}$$
✅	dogstatsd_suse_amd64	$${+0}$$	$${30.45}$$ < $${31.52}$$	$${+0}$$	$${8.01}$$ < $${8.98}$$
✅	iot_agent_deb_amd64	$${-0}$$	$${50.42}$$ < $${60.17}$$	$${-0}$$	$${12.84}$$ < $${15.82}$$
✅	iot_agent_deb_arm64	$${-0}$$	$${47.9}$$ < $${56.94}$$	$${+0}$$	$${11.14}$$ < $${13.86}$$
✅	iot_agent_deb_armhf	$${-0}$$	$${47.47}$$ < $${56.41}$$	$${+0}$$	$${11.21}$$ < $${13.86}$$
✅	iot_agent_rpm_amd64	$${-0}$$	$${50.42}$$ < $${60.18}$$	$${+0}$$	$${12.86}$$ < $${15.84}$$
✅	iot_agent_rpm_arm64	$${-0}$$	$${47.9}$$ < $${56.94}$$	$${-0}$$	$${11.16}$$ < $${13.76}$$
✅	iot_agent_suse_amd64	$${-0}$$	$${50.42}$$ < $${60.18}$$	$${+0}$$	$${12.86}$$ < $${15.84}$$