Add Proxy Support to Unix Install Script

[schmikei]

Description of Changes

Adds flags to the installer script

    -x, --proxy
        Defines the proxy server to be used for communication by the install script.
        Example: -x http(s)://server-ip:port/.

    -U, --proxy-user
        Defines the proxy user to be used for communication by the install script.

    -P, --proxy-password
        Defines the proxy password to be used for communication by the install script.

Please check that the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• Add a changelog entry (for non-trivial bug fixes / features)
• CI passes

[djaglowski]

Log Files	Logs / Second	CPU Avg (%)	CPU Avg Δ (%)	Memory Avg (MB)	Memory Avg Δ (MB)
1	1000	1.6896461	-0.10351205	128.58633	-0.60588074
1	5000	5.96555	-0.22419643	137.22495	-0.3152008
1	10000	11.017305	-0.74163723	143.51643	-5.091461
1	50000	64.8459	+0.19018555	170.40355	-9.0784
1	100000	132.30176	+0.47203064	221.2597	-9.964844
10	100	2.1552083	-0.017205715	132.0198	-0.9924469
10	500	6.982816	-0.655272	138.3129	-0.36880493
10	1000	13.327756	-0.20698738	146.12352	-1.2206268
10	5000	68.62156	+2.0688324	173.36772	-4.232895
10	10000	126.41905	-6.7586517	226.74866	-1.9543304

[codecov]

Codecov Report

Merging #515 (63a4c7b) into master (3140581) will increase coverage by 0.21%.
The diff coverage is 100.00%.

❗ Current head 63a4c7b differs from pull request most recent head 08f032f. Consider uploading reports for the commit 08f032f to get more accurate results

@@            Coverage Diff             @@
##           master     #515      +/-   ##
==========================================
+ Coverage   76.43%   76.64%   +0.21%     
==========================================
  Files         132      132              
  Lines        8290     8301      +11     
==========================================
+ Hits         6336     6362      +26     
+ Misses       1482     1469      -13     
+ Partials      472      470       -2     

Impacted Files	Coverage Δ
operator/builtin/output/googlecloud/entry.go	100.00% <100.00%> (ø)
operator/builtin/output/googlecloud/proto.go	100.00% <100.00%> (+13.98%)	⬆️
operator/builtin/input/journald/journald.go	60.58% <0.00%> (-1.46%)	⬇️
operator/builtin/output/forward/forward.go	61.73% <0.00%> (+1.23%)	⬆️
operator/builtin/input/file/file.go	78.68% <0.00%> (+1.52%)	⬆️

---

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[djaglowski]

Log Files	Logs / Second	CPU Avg (%)	CPU Avg Δ (%)	Memory Avg (MB)	Memory Avg Δ (MB)
1	1000	1.6207188	-0.17243934	128.33418	-0.8580322
1	5000	6.310548	+0.12080145	136.86086	-0.6792908
1	10000	12.569058	+0.8101158	148.54324	-0.06465149
1	50000	63.535824	-1.1198921	176.35667	-3.1252747
1	100000	124.91839	-6.911339	224.70743	-6.5171204
10	100	2.034459	-0.13795495	132.03624	-0.9760132
10	500	7.1553073	-0.48278093	139.78853	+1.1068268
10	1000	13.241616	-0.29312706	146.12257	-1.2215729
10	5000	58.640026	-7.9127007	174.43777	-3.1628418
10	10000	130.09698	-3.080719	237.87204	+9.169052

[jsirianni]

You can use this docker command to run a proxy locally

docker run \
  -p 3128:3128 \
  bmedora/squid:0.1.2 \
  /apps/squid/sbin/squid -NsY -f /apps/squid.conf.basicauth

scripts/unix-install.sh --proxy localhost:3128 --proxy-user user1 --proxy-password user1

[djaglowski]

Log Files	Logs / Second	CPU Avg (%)	CPU Avg Δ (%)	Memory Avg (MB)	Memory Avg Δ (MB)
1	1000	1.655216	-0.1379422	131.1584	+1.9661865
1	5000	5.637965	-0.5517812	135.01495	-2.5251923
1	10000	11.775937	+0.016994476	148.0058	-0.60209656
1	50000	60.19091	-4.4648056	172.77762	-6.7043304
1	100000	137.15738	+5.327652	235.99596	+4.771408
10	100	2.017221	-0.15519309	132.83647	-0.17578125
10	500	7.207092	-0.43099642	139.78004	+1.0983429
10	1000	13.017385	-0.5173588	146.62096	-0.7231903
10	5000	68.25973	+1.7070007	180.55226	+2.951645
10	10000	144.79688	+11.619171	234.81493	+6.1119385