teamcity: misc changes to CI (#3476)

- add architecture rule for ppc64le so that incompatible agents don't
  pick up the build
- disable PIE tests on linux/ppc64le (the tests claim it doesn't work)
- enable PIE tests on darwin/amd64 now that the entry point calculation
  has been fixed
- remove dependency on wget and curl in the test script for linux to
  reduce test time
- only install git in the linux test script when we need it
- remove staticcheck from linux/ppc64le builds (it takes almost 5
  minutes between installation and execution and makes the test timeout
  sometimes)
- drop windows/arm64/tip build, the windows/arm64 build is broken
  anyway and since there is only one agent it makes CI runs slow
- drop linux/ppc64le/tip build, there is only one agent, it's slow and
  it will always timeout. CI runs in excess of 1h are too long.

_scripts/make.go

@@ -398,7 +398,9 @@ func testStandard() {
 		dopie := false
 		switch runtime.GOOS {
 		case "linux":
-			dopie = true
+			if runtime.GOARCH != "ppc64le" {
+				dopie = true
+			}
 		case "windows":
 			// windows/arm64 always uses pie buildmode, no need to test everything again.
 			// only on Go 1.15 or later, with CGO_ENABLED and gcc found in path
@@ -413,6 +415,11 @@ func testStandard() {
 					}
 				}
 			}
+		case "darwin":
+			if runtime.GOARCH == "amd64" {
+				// arm64 can only build in pie mode
+				dopie = true
+			}
 		}
 		if dopie {
 			fmt.Println("\nTesting PIE buildmode, default backend")