add matcher attribute to contentmatchers

[venkykuberan]

Release Note Template for Downstream PRs (will be copied)

monitoring: added `matcher` attribute to `content_matchers` block for 
 `google_monitoring_uptime_check_config`

Fixes: hashicorp/terraform-provider-google#4591

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 3 files changed, 33 insertions(+))
Terraform Beta: Diff ( 3 files changed, 33 insertions(+))
TF Conversion: Diff ( 1 file changed, 11 insertions(+))

[modular-magician]

I have triggered VCR tests based on this PR's diffs. See the results here: "https://ci-oss.hashicorp.engineering/viewQueued.html?itemId=118013"

[modular-magician]

Hello! I am a robot who works on Magic Modules PRs.

I have detected that you are a community contributor, so your PR will be assigned to someone with a commit-bit on this repo for initial review.

Thanks for your contribution! A human will be with you soon.

@c2thorn, please review this PR or find an appropriate assignee.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 3 files changed, 33 insertions(+))
Terraform Beta: Diff ( 3 files changed, 33 insertions(+))
TF Conversion: Diff ( 1 file changed, 11 insertions(+))

[modular-magician]

I have triggered VCR tests based on this PR's diffs. See the results here: "https://ci-oss.hashicorp.engineering/viewQueued.html?itemId=118767"

[modular-magician]

Hello! I am a robot who works on Magic Modules PRs.

I have detected that you are a community contributor, so your PR will be assigned to someone with a commit-bit on this repo for initial review.

Thanks for your contribution! A human will be with you soon.

@c2thorn, please review this PR or find an appropriate assignee.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 3 files changed, 33 insertions(+))
Terraform Beta: Diff ( 3 files changed, 33 insertions(+))
TF Conversion: Diff ( 1 file changed, 11 insertions(+))

[modular-magician]

I have triggered VCR tests based on this PR's diffs. See the results here: "https://ci-oss.hashicorp.engineering/viewQueued.html?itemId=118801"