Move kron and diagonal tests out of core linalg tests

[christiangnrd]

Motivated by attempting to fix OpenCL.jl windows CI (JuliaGPU/OpenCL.jl#405), but the linalg/core testset allocates 2x more than any other testsuite, so I think splitting off the two most allocation-heavy testsets into their own testsuites is a good idea regardless.

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diff --git a/test/testsuite/linalg.jl b/test/testsuite/linalg.jl
index 17da632..794e6ab 100644
--- a/test/testsuite/linalg.jl
+++ b/test/testsuite/linalg.jl
@@ -299,7 +299,7 @@ end
 @testsuite "linalg/diagonal" (AT, eltypes) -> begin
     @testset "Array + Diagonal" begin
         n = 128
-        A = AT(rand(Float32, (n,n)))
+        A = AT(rand(Float32, (n, n)))
         d = AT(rand(Float32, n))
         D = Diagonal(d)
         B = A + D
@@ -324,7 +324,7 @@ end
         @test collect(cholesky(D).U) ≈ collect(cholesky(F).U)
         @test collect(cholesky(D).L) ≈ collect(cholesky(F).L)
 
-        d = AT([1f0, 2f0, -1f0, 0f0])
+        d = AT([1.0f0, 2.0f0, -1.0f0, 0.0f0])
         D = Diagonal(d)
         @test cholesky(D, check = false).info == 3
     end
@@ -420,7 +420,7 @@ end
     end
 
     @testset "$f with diagonal $d" for f in (triu, triu!, tril, tril!),
-                                        d in -2:2
+            d in -2:2
         A = randn(Float32, 10, 10)
         @test compare(f, AT, A, d)
 
diff --git a/test/testsuite/random.jl b/test/testsuite/random.jl
index 5e00682..15c5bbb 100644
--- a/test/testsuite/random.jl
+++ b/test/testsuite/random.jl
@@ -25,7 +25,7 @@
             Random.seed!(rng, 1)
             rand!(rng, B)
 
-            @test Array(A) == Array(B) skip=SEEDING_BROKEN && (prod(d) > length(rng.state))
+            @test Array(A) == Array(B) skip = SEEDING_BROKEN && (prod(d) > length(rng.state))
 
             if rng != cpu_rng
                 rand!(cpu_rng, A)
@@ -65,7 +65,7 @@
             randn!(rng, A)
             Random.seed!(rng, 1)
             randn!(rng, B)
-            @test Array(A) == Array(B) skip=SEEDING_BROKEN && (prod(d) > (2 * length(rng.state)))
+            @test Array(A) == Array(B) skip = SEEDING_BROKEN && (prod(d) > (2 * length(rng.state)))
 
             if rng != cpu_rng
                 randn!(cpu_rng, A)

[christiangnrd]

Also skips broken rand tests (#530) since they apparently sometimes succeed with OpenCL.jl