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Defining xcode build version as recipe properties for each respective builder.
ios-simulator-cr-recipe already had 11a1027 set as part of recipe properties.

Migrating over the following:
- xcode_10e1001
- xcode_11m382q

Bug: 1014539
Change-Id: I111bc9a02bb125c38daf2694441d3d6fd9bd3318
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1874735Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Jeff Yoon <jeffyoon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#708772}