fix(hardware): didn't mean to take this out (#15770)

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# Overview
We had removed this as part of another PR aimed at reducing magic
numbers and put it in ot3api, but then that caused a circular dependency
problem and we reverted. we just missed this line when we reverted
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# Test Plan

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hardware/opentrons_hardware/hardware_control/tool_sensors.py

@@ -82,6 +82,8 @@
 # FIXME we should organize all of these functions to use the sensor drivers.
 # FIXME we should restrict some of these functions by instrument type.
 
+PLUNGER_SOLO_MOVE_TIME = 0.2
+
 
 def _fix_pass_step_for_buffer(
     move_group: MoveGroupStep,

scripts/push.mk

@@ -1,7 +1,7 @@
 # utilities for pushing things to robots in a reusable fashion
 
 find_robot=$(shell yarn run -s discovery find -i 169.254)
-default_ssh_key := ~/.ssh/robot_key
+default_ssh_key := ~/.ssh/id_rsa
 default_ssh_opts := -o stricthostkeychecking=no -o userknownhostsfile=/dev/null
 version_dict=$(shell ssh $(call id-file-arg,$(2)) $(3) root@$(1) cat /etc/VERSION.json)
 is-ot3=$(findstring OT-3, $(version_dict))
@@ -19,7 +19,7 @@ is-in-version=$(findstring $(firstword $(checked-ssh-version)),$(allowed-ssh-ver
 # when using an OpenSSH version larger than 8.9,
 # we need to add a flag to use legacy scp with SFTP protocol
 scp-legacy-option-flag = $(if $(is-in-version),,-O)
-# when using windows, make is running against a different openSSH than the OS. 
+# when using windows, make is running against a different openSSH than the OS.
 # adding the -O flag to scp will fail if the openSSH on OS is less than 9.
 # if openSSH on OS is 9 or more please add the -O flag to scp.
 PLATFORM := $(shell uname -s)
@@ -80,7 +80,7 @@ ssh $(call id-file-arg,$(2)) $(3)  root@$(1) \
 endef
 
 # push-systemd-unit: move a systemd unit file to the robot
-# 
+#
 # argument 1 is the host to push to
 # argument 2 is the identity file to use, if any
 # argument 3 is any further ssh options, quoted