Werk #6934: cmk-update-agent: Remove unnecessary check for python interpreter

Component	Agent bakery
Title	cmk-update-agent: Remove unnecessary check for python interpreter
Date	Dec 12, 2018
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.6.0b1 Not yet released Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0b1 Not yet released Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0b1 Not yet released Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0b1 Not yet released Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0b1 Not yet released Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0b1 Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.5.0p10 Checkmk Enterprise (CEE), Checkmk MSP (CME)

Since Check_MK 1.5, the Agent Updater gets deployed as a binary file to linux systems by default.

Hence it is no longer necessary to check for an available python2 interpreter on agent installation unless the Agent Updater gets deployed as a script.

This werk adapts the agent's preinstall scripts so that no unnecessary checks are induced anymore.

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