[lucicfg] Update to v1.8.3.

Has different protobuf guts. The only observable side effect is different
formatting of generated files. But 'lucicfg validate' now compares files
semantically, so different formatting shouldn't matter.

There's a bunch of other internal changes, but clients that rely on them are
already aware and updated.

R=iannucci@chromium.org
BUG=986972

Change-Id: Ifd13c453736e438f28c2cf938003dce00f2cb199
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1769607
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Vadim Shtayura <vadimsh@chromium.org>

cipd_manifest.txt

@@ -31,7 +31,7 @@ infra/tools/luci/vpython/${platform} git_revision:98a268c6432f18aedd55d62b962176
 infra/tools/luci/led/${platform} git_revision:6d8f5e1d5857481abe0ce48f972ab5421fe244be
 
 # LUCI config generator
-infra/tools/luci/lucicfg/${platform} git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
+infra/tools/luci/lucicfg/${platform} git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
 
 # Mac toolchain installer
 infra/tools/mac_toolchain/${os=mac}-${arch} git_revision:47354a337f7eb444f2cb1e1b5d30ac3940f1d097

cipd_manifest.versions

@@ -162,56 +162,56 @@ infra/tools/luci/led/windows-amd64
 	dGqMQ4q4h-XVsocz3xSoNtm4IJIxG54QQlLO0NNBJNsC
 
 infra/tools/luci/lucicfg/linux-386
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	RrUUbaExKGwHbiZd1BfKQNUa7gUCzkezFcOlovQ_mRQC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	G98rKjuLKVoC0KHvHX5PPgToipo2L5aAabI-bpbBFkAC
 
 infra/tools/luci/lucicfg/linux-amd64
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	fO5EH7yqQ63XNusV0xyD706ax3op8C-Bq3Xr5NQm7AYC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	baqtqNkAvPb1R8eCEMZsLV8_Po4j6elJnCqZD8YrQUIC
 
 infra/tools/luci/lucicfg/linux-arm64
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	rgeYiRL-IAFiEo5vlkfaNP-At1NasgrZAQXN6rodXxgC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	ADWoUEBKHJZsF4OQXtq-ov0166rK1YzYsGBJeeCs8XcC
 
 infra/tools/luci/lucicfg/linux-armv6l
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	yY930SoQyXfJZTmJtvKfRvjizuwHowMBNQLJTzUrEogC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	ud0TNRg1x98zvepNH00BHhC22mg7hX-AIPUuclhCy9oC
 
 infra/tools/luci/lucicfg/linux-mips64
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	wjBBIBFg-ZkghxjAo7mqF_ESWfoMrgyidWML1YMXg7UC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	q7ABsk53QT3yfU6ne0OEEWp4r1HK5_Oto9reMq_akuQC
 
 infra/tools/luci/lucicfg/linux-mips64le
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	XDJBKFccWdS9kWrqtShtfdzgSu29py3s6z7BJSF4UOMC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	Crbk3geQmvjbG6ZL9xlwDfH3p2_85V4oQzB06LbISzIC
 
 infra/tools/luci/lucicfg/linux-mipsle
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	lUW-0FRkEhD94n2gVnCA3whiVwOmmP6wCTQMpQqJIp0C
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	7taqJvstp1oTCvOY6Frj_qaKX1u7NM79mkbKF532EdwC
 
 infra/tools/luci/lucicfg/linux-ppc64
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	PYgxQjXcX6vu74aoetShyQS2R7iHgoB5uB2K3TKkSM0C
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	FYIJux1hCVQt2zs_XJo_uMFLmWV2QnhKpheaK4CTItEC
 
 infra/tools/luci/lucicfg/linux-ppc64le
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	mRLu7VBH7oklb63vwm5QnxzJNSYRq6HNC_kYts646QAC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	tdhuW6DJa7MORgUL5P7abqLcFB2Q-SMMR3wuJv8oxHEC
 
 infra/tools/luci/lucicfg/linux-s390x
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	Gxeu5kJhhyn3VPzdYAb6YEJf8TRyybTKPiGovLxQg0gC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	KWN56KYnZYU4_YEiyQu8wzIRdyUdBn_qN6g5MCyS33UC
 
 infra/tools/luci/lucicfg/mac-amd64
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	l91KpOLsaNt1G7RiWWBhuNhGEKAcWVOA6sjnx9xsG04C
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	h-dUNM5nZakS-XarygsQsHb3vfDYH_iyOr2OLvcuoz8C
 
 infra/tools/luci/lucicfg/windows-386
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	nkxpga-12UuEqstoiWlbgbUedTq12-xXlsRP94_9KwwC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	0bRGHc6l_aNkmbru5yXxsBHWkYqe7JiKg1u9vCkUTE0C
 
 infra/tools/luci/lucicfg/windows-amd64
-	git_revision:677b535a231b1ffc901bb8c3a4a77d8ddf768605
-	Za1gF4WHWBO-9H22lhkAo404iFHKDUj7r73fOnfNODwC
+	git_revision:1920ffd3e59b6469c94fc575b6761909f82cfd7e
+	uK7rYVoWId7Y3hNyBBB8NN7Zgp6qm4UEKIlk3Y7McCYC
 
 infra/tools/luci/vpython/linux-386
 	git_revision:98a268c6432f18aedd55d62b9621765316dc2a16